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x=4y-2
x+2y=22
x=4y-2
4y-2+2y=22
6y=22+2
6y=24 I :6
y=4
x=4*4-2
x=16-2
x=14
zad 2
x=y+3
2x+2y=16
2y+6+2y=16
4y=16-6
4y=10 I : 4
y=2.5
x=2.5+3
x=5.5