3(x-7)+x=15

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Solution for 3(x-7)+x=15 equation: 



3(x-7)+x=15

We move all terms to the left:

3(x-7)+x-(15)=0

We add all the numbers together, and all the variables

x+3(x-7)-15=0

We multiply parentheses

x+3x-21-15=0

We add all the numbers together, and all the variables

4x-36=0

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

4x=36

x=36/4

x=9

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