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x=y/4 x=-2+y/-4
y/4=-2+y/-4
-4(y)=(-2+y)4
-4y=-8+4y
-4y-4y=-8
y=-8/-8
y=1
4x+y=0 -4x-y=-2
4x+1=0 -4x-1=-2
4x=-1 -4x=-2+1
x=-1/4 x=-1/-4
x=1/4
4(-1/4)+1=0 -4(1/4)-1=-2
-4/4+1=0 -4/4-1=-2
0=0 -2=-2