{"id":12484,"date":"2021-09-04T23:16:41","date_gmt":"2021-09-04T17:46:41","guid":{"rendered":"https:\/\/learnsteer.sasnaka.org\/ol\/?p=12484"},"modified":"2021-09-05T11:24:55","modified_gmt":"2021-09-05T05:54:55","slug":"%e0%b7%83%e0%b6%b8%e0%b6%9c%e0%b7%8f%e0%b6%b8%e0%b7%93-%e0%b7%83%e0%b6%b8%e0%b7%93%e0%b6%9a%e0%b6%bb%e0%b6%ab","status":"publish","type":"post","link":"https:\/\/learnsteer.sasnaka.org\/ol\/ordinary-level\/mathamatics\/%e0%b7%83%e0%b6%b8%e0%b6%9c%e0%b7%8f%e0%b6%b8%e0%b7%93-%e0%b7%83%e0%b6%b8%e0%b7%93%e0%b6%9a%e0%b6%bb%e0%b6%ab\/","title":{"rendered":"\u0dc3\u0db8\u0d9c\u0dcf\u0db8\u0dd3 \u0dc3\u0db8\u0dd3\u0d9a\u0dbb\u0dab"},"content":{"rendered":"\r\n
\r\n
\u0db4\u0dcf\u0da9\u0db8\u0dda \u0dc3\u0da7\u0dc4\u0db1 Download \u0d9a\u0dbb\u0d9c\u0db1\u0dca\u0db1.<\/a><\/div>\r\n<\/div>\r\n\r\n\r\n\r\n

<\/p>\r\n\r\n\r\n\r\n

\r\n

\u0dc3\u0db8\u0d9c\u0dcf\u0db8\u0dd3 \u0dc3\u0db8\u0dd3\u0d9a\u0dbb\u0dab<\/strong><\/p>\r\n

x + y = 7 ——\u00a0 (1)<\/p>\r\n<\/div>\r\n

x \u2013 y = 5 ——\u00a0 \u00a0(2)<\/p>\r\n

<\/p>\r\n

\u00a0 \u00a0 (1)+(2)<\/p>\r\n

x + y + x \u2013 y = 7 + 5<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0x = 6<\/p>\r\n

x \u0dc4\u0dd2 \u0d85\u0d9c\u0dba 1 \u0da7 \u0d86\u0daf\u0dda\u0dc1 \u0d9a\u0dd2\u0dbb\u0dd3\u0db8\u0dd9\u0db1\u0dca,<\/p>\r\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 x + y = 7<\/p>\r\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 6 + y = 7<\/p>\r\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 6 + y \u2013 6 = 7 \u2013 6<\/p>\r\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 y = 1<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0x\u00a0 = 6<\/span><\/u>\u00a0 ,\u00a0 y = 1<\/span><\/p>\r\n

\u0db7\u0dcf\u0d9c<\/strong> \u0dc3\u0d82\u0d9c\u0dd4\u0dab\u0d9a<\/strong> \u0dc3\u0dc4\u0dd2\u0dad<\/strong> \u0dc3\u0db8\u0d9c\u0dcf\u0db8\u0dd3<\/strong> \u0dc3\u0db8\u0dd3\u0d9a\u0dbb\u0dab<\/strong><\/p>\r\n

\u00a0 \u00a0<\/p>\r\n

(3) – (4)\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0y \u0dc4\u0dd2 \u0d85\u0d9c\u0dba\u00a0 (3)\u00a0 \u0da7 \u0d86\u0daf\u0dda\u0dc1\u0dba\u0dd9\u0db1\u0dca,<\/p>\r\n

3x + 2y \u2013 (3x \u2013 4y) = 18 \u2013 0\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 3x + 2y = 18 \u00a0<\/p>\r\n

\u00a0 3x + 2y \u2013 3x + 4y = 18\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a03x + (2 \u00d7 3) = 18<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a06y = 18\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 3x = 12\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0y = 3\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 x = 4<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0y = 3<\/span>\u00a0 ,\u00a0 x = 4\u00a0<\/span><\/p>\r\n

\u0db4\u0dc4\u0dad \u0dc3\u0db8\u0dd3\u0d9a\u0dbb\u0dab \u0dc0\u0dd2\u0dc3\u0daf\u0db1\u0dca\u0db1.<\/u><\/span><\/p>\r\n

\u00a01)\u00a0 2x –\u00a0 y\u00a0 =\u00a0 0<\/p>\r\n

\u00a0 \u00a0 \u00a0 x\u00a0 +\u00a0 y\u00a0 =\u00a0 3<\/p>\r\n

 <\/p>\r\n

2)\u00a0 \u00a0x +\u00a0 2y\u00a0 =\u00a0 9<\/p>\r\n

\u00a0 \u00a0 \u00a0 -x\u00a0 +\u00a0 y\u00a0 =\u00a0 3<\/p>\r\n

 <\/p>\r\n

3)\u00a0 3x \u2013\u00a0 2y\u00a0 =\u00a0 11<\/p>\r\n

\u00a0 \u00a0 \u00a0 x\u00a0 \u2013\u00a0 2y\u00a0 =\u00a0 1<\/p>\r\n

 <\/p>\r\n

4)\u00a0 \u00a0-3x +\u00a0 4y\u00a0 =\u00a0 9<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0-3x\u00a0 +\u00a0 y\u00a0 =\u00a0 6<\/p>\r\n

 <\/p>\r\n

5)\u00a0 \u00a07x +\u00a0 2y\u00a0 =\u00a0 12<\/p>\r\n

\u00a0 \u00a0 \u00a03x\u00a0 +\u00a0 2y\u00a0 =\u00a0 4<\/p>\r\n

 <\/p>\r\n

6)\u00a0 \u00a03x +\u00a0 2y\u00a0 =\u00a0 1<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 x\u00a0 –\u00a0 2y\u00a0 =\u00a0 -5<\/p>\r\n

 <\/p>\r\n

7)\u00a0 x +\u00a0 3y\u00a0 =\u00a0 5<\/p>\r\n

\u00a0 \u00a0 2x\u00a0 +\u00a0 y\u00a0 =\u00a0 5\u00a0 \u0dc3\u0db8\u0dd3\u0d9a\u0dbb\u0dab \u0dba\u0dd4\u0d9c\u0dbd\u0dba\u0dda x = 2 \u0d91\u0d9a\u0dca \u0dc0\u0dd2\u0dc3\u0db3\u0dd4\u0db8\u0d9a\u0dca \u0db1\u0db8\u0dca y \u0dc4\u0dd2 \u0d85\u0d9c\u0dba \u0dc3\u0ddc\u0dba\u0db1\u0dca\u0db1.<\/p>\r\n

 <\/p>\r\n

8) 5x +\u00a0 2y\u00a0 =\u00a0 18<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0x\u00a0 –\u00a0 3y\u00a0 =\u00a0 7 \u0db8\u0dd9\u0dc4\u0dd2 x = 4 \u0db1\u0db8\u0dca y \u0dc4\u0dd2 \u0d85\u0d9c\u0dba \u0dc3\u0ddc\u0dba\u0db1\u0dca\u0db1<\/p>\r\n

 <\/p>\r\n

9) 3x +\u00a0 2y\u00a0 =\u00a0 10<\/p>\r\n

\u00a0 \u00a0 2x\u00a0 +\u00a0 3y\u00a0 =\u00a0 15 \u0db1\u0db8\u0dca (x + y) \u0dc4\u0dd2 \u0d85\u0d9c\u0dba \u0dc3\u0ddc\u0dba\u0db1\u0dca\u0db1<\/p>\r\n

 <\/p>\r\n

10)\u00a0 a –\u00a0 2b\u00a0 =\u00a0 4<\/p>\r\n

\u00a0 \u00a0 \u00a0 2a\u00a0 –\u00a0 b\u00a0 =\u00a0 5\u00a0 \u0db1\u0db8\u0dca (a – b) \u0dc4\u0dd2 \u0d85\u0d9c\u0dba \u0dc3\u0ddc\u0dba\u0db1\u0dca\u0db1<\/p>\r\n

 <\/p>\r\n

11)\u00a0 3x –\u00a0 2y\u00a0 =\u00a0 10<\/p>\r\n

\u00a0\u00a0\u00a0\u00a0\u00a0 2x\u00a0 –\u00a0 3y\u00a0 =\u00a0 15\u00a0 \u0db1\u0db8\u0dca (x – y) \u0dc4\u0dd2 \u0d85\u0d9c\u0dba \u0dc3\u0ddc\u0dba\u0db1\u0dca\u0db1<\/p>\r\n

 <\/p>\r\n

\u0db4\u0dd2\u0dc5\u0dd2\u0dad\u0dd4\u0dbb\u0dd4<\/u><\/p>\r\n

\u00a01)\u00a0 \u00a0 x =\u00a0 1 ,\u00a0 y\u00a0 =\u00a0 2<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 2x\u00a0 –\u00a0 y\u00a0 =\u00a0 0 ——\u00a0 (1)<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 x\u00a0 +\u00a0 y =\u00a0 3 ——- (2)<\/p>\r\n

 <\/p>\r\n

(1)\u00a0 +\u00a0 (2)\u00a0 \u0db1\u0dca,<\/p>\r\n

2x\u00a0 –\u00a0 y\u00a0 +\u00a0 x\u00a0 +\u00a0 y\u00a0 =\u00a0 0\u00a0 +\u00a0 3<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a03x\u00a0 =\u00a0 3<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0x\u00a0 =\u00a0 1<\/span><\/p>\r\n

 <\/p>\r\n

(2)\u00a0 \u0da7 \u0d86\u0daf\u0dda\u0dc1\u0dba\u0dd9\u0db1\u0dca,\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u0dc4\u0ddd\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 (1)\u00a0 \u00a0\u0da7 \u0d86\u0daf\u0dda\u0dc1\u0dba\u0dd9\u0db1\u0dca,<\/p>\r\n

\u00a0x\u00a0 +\u00a0 y\u00a0 =\u00a0 3\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2x\u00a0 –\u00a0 y\u00a0 =\u00a0 0<\/p>\r\n

\u00a0 \u00a0 1+ y\u00a0 =\u00a0 3\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a02\u00d71\u00a0 –\u00a0 y\u00a0 =\u00a0 0<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0y\u00a0 =\u00a0 2<\/span>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 y\u00a0 =\u00a0 2<\/span><\/p>\r\n

 <\/p>\r\n

2) x =\u00a0 1 ,\u00a0 y\u00a0 =\u00a0 4<\/p>\r\n

\u00a0 \u00a0 \u00a0x\u00a0 +\u00a0 2y\u00a0 =\u00a0 9 —— (1)\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0-x\u00a0 +\u00a0 y\u00a0 =\u00a0 3 —— (2)<\/p>\r\n

 <\/p>\r\n

(1) + (2)\u00a0 \u00a0\u0db1\u0dca,<\/p>\r\n

\u00a0 x\u00a0 +\u00a0 2y\u00a0 +\u00a0 (-x\u00a0 +\u00a0 y)\u00a0 =\u00a0 9\u00a0 +\u00a0 3<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 3y\u00a0 =\u00a0 12<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 y\u00a0 =\u00a0 4<\/span><\/p>\r\n

 <\/p>\r\n

(2) \u0da7 \u0d86\u0daf\u0dda\u0dc1\u0dba\u0dd9\u0db1\u0dca,<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 -x\u00a0 +\u00a0 y\u00a0 =\u00a0 3<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 -x\u00a0 +\u00a0 4\u00a0 =\u00a0 3<\/p>\r\n

\u00a0\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 x\u00a0 =\u00a0 1<\/span><\/p>\r\n

 <\/p>\r\n

3)\u00a0 \u00a0 \u00a0 x =\u00a0 5 , y\u00a0 =\u00a0 2<\/p>\r\n

\u00a0 \u00a0 \u00a03x\u00a0 –\u00a0 2y\u00a0 =\u00a0 11 —— (1)<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0x\u00a0 –\u00a0 2y\u00a0 =\u00a0 1 ——- (2)<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0(1)\u00a0 \u00a0–\u00a0 \u00a0(2)\u00a0 \u00a0\u0db1\u0dca,<\/p>\r\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 3x\u00a0 -2y\u00a0 –\u00a0 (x\u00a0 –\u00a0 2y)\u00a0 =\u00a0 11\u00a0 –\u00a0 1<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a02x\u00a0 =\u00a0 10<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0x\u00a0 =\u00a0 5<\/span><\/p>\r\n

 <\/p>\r\n

\u00a0 \u00a0 \u00a0 (2)\u00a0 \u0da7\u00a0 \u0d86\u0daf\u0dda\u0dc1\u0dba\u0dd9\u0db1\u0dca,<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0x\u00a0 –\u00a0 2y\u00a0 =\u00a0 1<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a05\u00a0 –\u00a0 2y\u00a0 =\u00a0 1<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 2y\u00a0 =\u00a0 4\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 y\u00a0 =\u00a0 2<\/span><\/p>\r\n

 <\/p>\r\n

4)\u00a0 x = 1, y = 3<\/p>\r\n

\u00a0 -3x\u00a0 +\u00a0 4y\u00a0 =\u00a0 9 —— 1<\/p>\r\n

\u00a0 -3x\u00a0 +\u00a0 3y\u00a0 =\u00a0 6 —— 2<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0(1)\u00a0 \u00a0–\u00a0 \u00a0(2)\u00a0 \u00a0\u0db1\u0dca,<\/p>\r\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -3x\u00a0 +\u00a0 4y\u00a0 –\u00a0 (-3x\u00a0 +\u00a0 3y)\u00a0 =\u00a0 9\u00a0 –\u00a0 6<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0y\u00a0 = 3\u00a0<\/span> \u00a0 \u00a0 \u00a0<\/p>\r\n

 <\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 (1)\u00a0 \u0da7\u00a0 \u0d86\u0daf\u0dda\u0dc1\u0dba\u0dd9\u0db1\u0dca,<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0-3x\u00a0 +\u00a0 4y\u00a0 =\u00a0 9<\/p>\r\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -3x\u00a0 +\u00a0 4(3)\u00a0 =\u00a0 9<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 3x\u00a0 =\u00a0 3<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 x\u00a0 =\u00a0 1<\/span><\/p>\r\n

 <\/p>\r\n

5)\u00a0 x = 2 , y = -1<\/p>\r\n

\u00a0 7x\u00a0 +\u00a0 2y\u00a0 =\u00a0 12 —— (1)<\/p>\r\n

\u00a0 3x\u00a0 +\u00a0 2y\u00a0 =\u00a0 4 ——- (2)<\/p>\r\n

(1)\u00a0 \u00a0–\u00a0 \u00a0(2)\u00a0 \u0db1\u0dca,<\/p>\r\n

7x\u00a0 +\u00a0 2y\u00a0 –\u00a0 (3x\u00a0 +\u00a0 2y)\u00a0 =\u00a0 12\u00a0 –\u00a0 4<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a04x\u00a0 =\u00a0 8<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0x\u00a0 =\u00a0 2<\/span><\/p>\r\n

 <\/p>\r\n

(2)\u00a0 \u00a0\u0da7\u00a0 \u0d86\u0daf\u0dda\u0dc1\u0dba\u0dd9\u0db1\u0dca,<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 3x\u00a0 +\u00a0 2y\u00a0 =\u00a0 4<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a03(2)\u00a0 +\u00a0 2y\u00a0 =\u00a0 4<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a02y\u00a0 =\u00a0 -2<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0y\u00a0 =\u00a0 -1<\/span><\/p>\r\n

 <\/p>\r\n

6)\u00a0 \u00a0x = -1 , y = 2<\/p>\r\n

\u00a03x\u00a0 +\u00a0 2y\u00a0 =\u00a0 1 —— (1)<\/p>\r\n

\u00a0 \u00a0 x\u00a0 –\u00a0 2y\u00a0 =\u00a0 -5 —– (2)<\/p>\r\n

(1)\u00a0 \u00a0+\u00a0 \u00a0(2)\u00a0 \u0db1\u0dca,<\/p>\r\n

\u00a03x\u00a0 +\u00a0 2y\u00a0 +\u00a0 (x\u00a0 –\u00a0 2y)\u00a0 =\u00a0 1\u00a0 +\u00a0 (-5)<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 4x\u00a0 =\u00a0 -4<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 x\u00a0 =\u00a0 -1<\/span><\/p>\r\n

(2)\u00a0 \u00a0\u0da7\u00a0 \u0d86\u0daf\u0dda\u0dc1\u0dba\u0dd9\u0db1\u0dca,<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 x\u00a0 –\u00a0 2y\u00a0 =\u00a0 -5<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 -1\u00a0 –\u00a0 2y\u00a0 =\u00a0 -5<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 2y\u00a0 =\u00a0 4<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 y\u00a0 =\u00a0 2<\/span><\/p>\r\n

 <\/p>\r\n

7) x +\u00a0 3y\u00a0 =\u00a0 5 —— (1)<\/p>\r\n

\u00a0 \u00a02x\u00a0 +\u00a0 y\u00a0 =\u00a0 5 —–\u00a0 (2)<\/p>\r\n

\u0db8\u0dd9\u0dc4\u0dd2\u00a0 x\u00a0 =\u00a0 2\u00a0 \u0db1\u0db8\u0dca \u0d91\u0db8 \u0d85\u0d9c\u0dba\u00a0 (2)\u00a0 \u0da7 \u0d86\u0daf\u0dda\u0dc1\u0dba\u0dd9\u0db1\u0dca,<\/p>\r\n

2\u00d72\u00a0 +\u00a0 y\u00a0 =\u00a0 5<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 y\u00a0 =\u00a0 1<\/p>\r\n

 <\/p>\r\n

8)\u00a0 \u00a05x +\u00a0 2y\u00a0 =\u00a0 18 ——\u00a0 (1)<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 x\u00a0 –\u00a0 3y\u00a0 =\u00a0 7 ——\u00a0 (2)<\/p>\r\n

\u00a0 \u0db8\u0dd9\u0dc4\u0dd2\u00a0 x\u00a0 =\u00a0 4 \u0d85\u0d9c\u0dba\u00a0 (2)\u00a0 \u0da7 \u0d86\u0daf\u0dda\u0dc1\u0dba\u0dd9\u0db1\u0dca,<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 4\u00a0 –\u00a0 3y\u00a0 =\u00a0 7<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 -3y\u00a0 =\u00a0 3<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0y\u00a0 =\u00a0 -1<\/span><\/p>\r\n

 <\/p>\r\n

9) 3x +\u00a0 2y\u00a0 =\u00a0 10 —— (1)<\/p>\r\n

\u00a0 \u00a0 2x\u00a0 +\u00a0 3y\u00a0 =\u00a0 15 —— (2)<\/p>\r\n

(1)\u00a0 \u00a0+\u00a0 \u00a0(2)\u00a0 \u0db1\u0dca,<\/p>\r\n

3x\u00a0 +\u00a0 2y\u00a0 +\u00a0 2x\u00a0 +\u00a0 3y\u00a0 =\u00a0 10\u00a0 +\u00a0 15<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 5x\u00a0 +\u00a0 5y\u00a0 =\u00a0 25<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a05(x\u00a0 +\u00a0 y)\u00a0 =\u00a0 25<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0x\u00a0 +\u00a0 y\u00a0 =\u00a0 5<\/span><\/p>\r\n

 <\/p>\r\n

 <\/p>\r\n

10)\u00a0 \u00a0 a –\u00a0 2b\u00a0 =\u00a0 4 ——- (1)<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 2a\u00a0 –\u00a0 b\u00a0 =\u00a0 5 ——- (2)<\/p>\r\n

\u00a0 \u00a0 \u00a0(1)\u00a0 \u00a0+\u00a0 \u00a0(2)\u00a0 \u0db1\u0dca,<\/p>\r\n

\u00a0\u00a0\u00a0\u00a0 a\u00a0 –\u00a0 2b\u00a0 +\u00a0 (2a\u00a0 –\u00a0 b)\u00a0 =\u00a0 4\u00a0 +\u00a0 5<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a03a\u00a0 –\u00a0 3b\u00a0 =\u00a0 9<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 3(a\u00a0 –\u00a0 b)\u00a0 =\u00a0 9<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 a\u00a0 –\u00a0 b = 3<\/span><\/p>\r\n

 <\/p>\r\n

11) 3x –\u00a0 2y\u00a0 =\u00a0 10 —— (1)<\/p>\r\n

\u00a0\u00a0\u00a0\u00a0 2x\u00a0 –\u00a0 3y\u00a0 =\u00a0 15 —— (2)<\/p>\r\n

\u00a0 \u00a0 \u00a0(1 )\u00a0 \u00a0+\u00a0 \u00a0 (2)\u00a0 \u0db1\u0dca,<\/p>\r\n

\u00a0\u00a0\u00a0\u00a0 3x\u00a0 –\u00a0 2y\u00a0 +\u00a0 (2x\u00a0 –\u00a0 3y)\u00a0 =\u00a0 10\u00a0 +\u00a0 15<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 5x\u00a0 –\u00a0 5y\u00a0 =\u00a0 25<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a05(x\u00a0 –\u00a0 y)\u00a0 =\u00a0 25<\/p>\r\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0 x\u00a0 –\u00a0 y = 5<\/span><\/p>\r\n

 <\/p>\r\n\r\n\r\n\r\n

\r\n
\u0db4\u0dcf\u0da9\u0db8\u0dda \u0dc3\u0da7\u0dc4\u0db1 Download \u0d9a\u0dbb\u0d9c\u0db1\u0dca\u0db1.<\/a><\/div>\r\n<\/div>\r\n\r\n\r\n\r\n
\u00a0<\/div>\r\n\r\n\r\n\r\n

\u0d89\u0daf\u0dd2\u0dbb\u0dd2\u0dba\u0dda\u0daf\u0dd3 \u0db4\u0dca\u200d\u0dbb\u0dc1\u0dca\u0db1 \u0d87\u0dad\u0dd4\u0dbd\u0dad\u0dca \u0dc0\u0db1\u0dca\u0db1\u0dda \u0db8\u0dd9\u0dad\u0db1\u0da7\u0dba\u0dd2.<\/p>\r\n\r\n\r\n\r\n

\r\n
\u0dad\u0dc0\u0dad\u0dca \u0db4\u0dca\u200d\u0dbb\u0dc1\u0dca\u0db1 \u0db4\u0dd9\u0db1\u0dca\u0dc0\u0db1\u0dca\u0db1.<\/a><\/div>\r\n<\/div>\r\n\r\n\r\n\r\n
\u00a0<\/div>\r\n\r\n\r\n\r\n

 <\/p>\r\n\r\n

 <\/p>\r\n

 <\/p>","protected":false},"excerpt":{"rendered":"

\u0d89\u0daf\u0dd2\u0dbb\u0dd2\u0dba\u0dda\u0daf\u0dd3 \u0db4\u0dca\u200d\u0dbb\u0dc1\u0dca\u0db1 \u0d87\u0dad\u0dd4\u0dbd\u0dad\u0dca \u0dc0\u0db1\u0dca\u0db1\u0dda \u0db8\u0dd9\u0dad\u0db1\u0da7\u0dba\u0dd2.      <\/p>\n","protected":false},"author":135,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"tdm_status":"","tdm_grid_status":"","footnotes":""},"categories":[3755,3787,3750,3623],"tags":[3818,3817],"class_list":{"0":"post-12484","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-paper-2","7":"category-mathamatics","8":"category-algebra-grade-11","9":"category-ordinary-level","10":"tag-3818","11":"tag-3817"},"_links":{"self":[{"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/posts\/12484"}],"collection":[{"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/users\/135"}],"replies":[{"embeddable":true,"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/comments?post=12484"}],"version-history":[{"count":7,"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/posts\/12484\/revisions"}],"predecessor-version":[{"id":12510,"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/posts\/12484\/revisions\/12510"}],"wp:attachment":[{"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/media?parent=12484"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/categories?post=12484"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/learnsteer.sasnaka.org\/ol\/wp-json\/wp\/v2\/tags?post=12484"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}