-87=3(6x+7)

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Solution for -87=3(6x+7) equation: 



-87=3(6x+7)

We move all terms to the left:

-87-(3(6x+7))=0



We calculate terms in parentheses: -(3(6x+7)), so:

3(6x+7)

We multiply parentheses

18x+21

Back to the equation:

-(18x+21)



We get rid of parentheses

-18x-21-87=0

We add all the numbers together, and all the variables

-18x-108=0

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

-18x=108

x=108/-18

x=-6

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