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Cum se poate rezolva exercitiul ? 2(x-1)+3x=-x+1

Răspuns :

2x-2+3x=-x+1
5x-2=-x+1
5x+x=1+2
6x=3
x=3/6
x=1/2
2(x-1)+3x=-x+1
2x-2+3x=-x+1
5x-2=-x+1
-2-1=-x-5x
-3=-6x
-6x=-3|:(-6)
x=1/2