-112=-7x+7(4x+20)

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Solution for -112=-7x+7(4x+20) equation: 



-112=-7x+7(4x+20)

We move all terms to the left:

-112-(-7x+7(4x+20))=0



We calculate terms in parentheses: -(-7x+7(4x+20)), so:

-7x+7(4x+20)

We multiply parentheses

-7x+28x+140

We add all the numbers together, and all the variables

21x+140

Back to the equation:

-(21x+140)



We get rid of parentheses

-21x-140-112=0

We add all the numbers together, and all the variables

-21x-252=0

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

-21x=252

x=252/-21

x=-12

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