3(x+1)-x=7

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Solution for 3(x+1)-x=7 equation: 



3(x+1)-x=7

We move all terms to the left:

3(x+1)-x-(7)=0

We add all the numbers together, and all the variables

-1x+3(x+1)-7=0

We multiply parentheses

-1x+3x+3-7=0

We add all the numbers together, and all the variables

2x-4=0

We move all terms containing x to the left, all other terms to the right

2x=4

x=4/2

x=2

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