13=3x+(-8)

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Solution for 13=3x+(-8) equation: 



13=3x+(-8)

We move all terms to the left:

13-(3x+(-8))=0



We calculate terms in parentheses: -(3x+(-8)), so:

3x+(-8)

We add all the numbers together, and all the variables

3x-8

Back to the equation:

-(3x-8)



We get rid of parentheses

-3x+8+13=0

We add all the numbers together, and all the variables

-3x+21=0

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

-3x=-21

x=-21/-3

x=+7

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