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{5x+y=11 / * 2
{ 8x - 2y = 14
{ 10x+2y=22
______________
18x = 36 // podzielic 18
x=2
{8*2-2y=14
{x=2
{16-2y=14
{x=2
{-2y=14-16
{x=2
{-2y=-2 // podzeilic (-2)
{x=2
{y=1
{x=2
numer 2
{-3x+y=2 / *2
{7x-2y=-2
{-6x+2y=4
{7x-2y=-2
_____________
1x=2 // podzielic 1
x=2
-6*2+2y=4
x=2
-12+2y=4
x=2
2y=4+12
x=2
2y=16// podzielic 2
x=2
y=8
x=2