x+7=3x+7+x

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Solution for x+7=3x+7+x equation: 



x+7=3x+7+x

We move all terms to the left:

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

We add all the numbers together, and all the variables

x-(4x+7)+7=0

We get rid of parentheses

x-4x-7+7=0

We add all the numbers together, and all the variables

-3x=0

x=0/-3

x=0

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