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{ -6x - 4y = - 12
{ 2x + y = 4
y=4-2x
-6x-4y=-12
-6x-4(4-2x)=-12
-6x-16+8x=-12
2x=-12+16
2x=4/2
x=2
y=4-2*2
y=4-4
y=0
spr.
2x+y=4
2*2+0=4
4+0=0
0=0
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{ -6x - 4y = - 12
{ 2x + y = 4
y=4-2x
-6x-4y=-12
-6x-4(4-2x)=-12
-6x-16+8x=-12
2x=-12+16
2x=4/2
x=2
y=4-2*2
y=4-4
y=0
spr.
2x+y=4
2*2+0=4
4+0=0
0=0