Question 665718
-6y+7y=2x+2(x-2)-2x+2 

+y= 2x+2x-4-2x+2
y=2x-2


4(x+y)-x+y=-23 
4x+4y-x+y=-23
3x+5y=-23

substitute y in second equation

3x+5y=-23
3x+5(2x-2)=-23
3x+10x-10=-23
13x=-13
x=-1

plug x
we get y = -4