Question

-4x+3y=7
3(x+1)=8+x-2y

Answer 1

{-4x+3y= 7
{3(x+1)= 8+x-2y
3x+3= 8+x-2y
3x-x-2y= 8-3
2x-2y= 5

2x-2y=5 .(2)
4x-4y= 10

-4x +3y= 7
4x-4y= 10
———————
0 -y = 17 .(-1)
y= -17

4x-4y= 10
4x-4.(-17)= 10
4x+68= 10
4x= 10-68
4x= -58
x= -58/4
x= -14,5