na krzyz to pomnoz i wyjdzie:
2x+4=6x-6
2x-6x=4+6
-4x=10 /:(-4)
x= -2,5
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na krzyz to pomnoz i wyjdzie:
2x+4=6x-6
2x-6x=4+6
-4x=10 /:(-4)
x= -2,5