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3(x+1)+2x+3=2x+8+2x-1

Răspuns :

3x+3+2x+3=2x+8+2x-1
5x+6=4x+7
5x=4x+1
x=1
3x+3+2x+3=4x+7
5x+6=4x+7
5x-4x=7-6
x=1