rozwiąż równania -(x-1)=2 i x=1-3(x+1)
-x+1=2
-x=1
x=-1
x=1-3(x+1)
x=1-3x-3
4x=1-3
4x=-2
x=-2/4
x=-1/2
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-x+1=2
-x=1
x=-1
x=1-3(x+1)
x=1-3x-3
4x=1-3
4x=-2
x=-2/4
x=-1/2