87=(7x-4)

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Solution for 87=(7x-4) equation: 



87=(7x-4)

We move all terms to the left:

87-((7x-4))=0



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

(7x-4)

We get rid of parentheses

7x-4

Back to the equation:

-(7x-4)



We get rid of parentheses

-7x+4+87=0

We add all the numbers together, and all the variables

-7x+91=0

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

-7x=-91

x=-91/-7

x=+13

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