x+2x+(x+7)=57

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Solution for x+2x+(x+7)=57 equation: 



x+2x+(x+7)=57

We move all terms to the left:

x+2x+(x+7)-(57)=0

We add all the numbers together, and all the variables

3x+(x+7)-57=0

We get rid of parentheses

3x+x+7-57=0

We add all the numbers together, and all the variables

4x-50=0

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

4x=50

x=50/4

x=12+1/2

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