Krótkie zadanie:
3(x-2)=x
3x-6=x
2x-6=0
x=3
-6=x-3x
-6=-2x *1
6=2x/ 2
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3(x-2)=x
3x-6=x
2x-6=0
x=3
3(x-2)=x
3x-6=x
-6=x-3x
-6=-2x *1
6=2x/ 2
x=3