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{x+y=2 /-2
3x+2y=4
-2x-2y=-4
x=0
{3x+2y=4
0+2y=4
2y=4/2
y=2
y=2-x
3x+2(2-x)=4
y=2-x
3x+ 4-x=4
2x=0
x=0
x=0
y=2-0
x=0
y=2
{x+y=2/:(-3)
{3x+2y=4
{-3x-3y=-6
______________
-y=-2/:(-1)
y=2
x+y=2
x=2-2
x=0
{x=0
{y=2