2x+3=5 2x-2=0
3x-y=2 3x-y-2=0
2x-2=3x-y-2
-x+y=0
x=y
układ ten: 2x+3=5 3x-x=2
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2x+3=5 2x-2=0
3x-y=2 3x-y-2=0
2x-2=3x-y-2
-x+y=0
x=y
układ ten: 2x+3=5 3x-x=2