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3(x+1)+7=2(x+1)+12 please


Răspuns :

3X+3+7=2x+2+12
3x+10=2x+14
3x-2x=14-10
x=4
[tex]3(x+1)+7=2(x+1)+12 \\ 3x+3+7=2x+2+12 \\ 3x-2x=2+12-3-7 \\ \boxed{x=4}[/tex]