85=(4x+21)

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Solution for 85=(4x+21) equation: 



85=(4x+21)

We move all terms to the left:

85-((4x+21))=0



We calculate terms in parentheses: -((4x+21)), so:

(4x+21)

We get rid of parentheses

4x+21

Back to the equation:

-(4x+21)



We get rid of parentheses

-4x-21+85=0

We add all the numbers together, and all the variables

-4x+64=0

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

-4x=-64

x=-64/-4

x=+16

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