12x + 3y = - 96
12x + 3y -12x= - 96-12x
3y=- 96-12x
3y/3=- 96/3-12x/3
y=-32-4x
4x + 3y = - 32
4x + 3(-32-4x) = - 32
4x + 3(-32) (3)(-4x) = - 32
4x -96 -12x = - 32
-96 -8x = - 32
-96 -8x+96 = - 32+96
-8x=64
-8x/-8=64/-8
x=-8
y=-32-4x
y=-32-4(-8)
y=-32+32
y=0