x=12 y=12
3x-2y=12
Divide both sides by 3
x-2/3y=4
x=4+2/3y
3(4+2/3y)-2y=12
12+2y-2y=12
12=12
y=12 x=12
3*12-2*12=12
36-24=12
x=4+2/312=4+8=12