-x+7=13+x+x

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Solution for -x+7=13+x+x equation: 



-x+7=13+x+x

We move all terms to the left:

-x+7-(13+x+x)=0

We add all the numbers together, and all the variables

-x-(2x+13)+7=0

We add all the numbers together, and all the variables

-1x-(2x+13)+7=0

We get rid of parentheses

-1x-2x-13+7=0

We add all the numbers together, and all the variables

-3x-6=0

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

-3x=6

x=6/-3

x=-2

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