-20=(13+7x)

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Solution for -20=(13+7x) equation: 



-20=(13+7x)

We move all terms to the left:

-20-((13+7x))=0

We add all the numbers together, and all the variables

-((7x+13))-20=0



We calculate terms in parentheses: -((7x+13)), so:

(7x+13)

We get rid of parentheses

7x+13

Back to the equation:

-(7x+13)



We get rid of parentheses

-7x-13-20=0

We add all the numbers together, and all the variables

-7x-33=0

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

-7x=33

x=33/-7

x=-4+5/7

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