13=x-(-7)

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Solution for 13=x-(-7) equation: 



13=x-(-7)

We move all terms to the left:

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



We calculate terms in parentheses: -(x-(-7)), so:

x-(-7)

We add all the numbers together, and all the variables

x+7

Back to the equation:

-(x+7)



We get rid of parentheses

-x-7+13=0

We add all the numbers together, and all the variables

-1x+6=0

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

-x=-6

x=-6/-1

x=+6

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