X+2y=7;2x+y=2
2 answers
if you want that solved the answer is x+-1, y=4
Write x+2y=7 as x=7-2y, then substitute into second equation:
2x+y=2
2(7-2y)+y=2
14-4y+y=2
14-3y=2
-3y=-12
y=4
Thus, x+2y = 7 --> x+2(4) =7 --> x+8=7 --> x=-1
Therefore, x=-1 and y=4
2x+y=2
2(7-2y)+y=2
14-4y+y=2
14-3y=2
-3y=-12
y=4
Thus, x+2y = 7 --> x+2(4) =7 --> x+8=7 --> x=-1
Therefore, x=-1 and y=4