85=x+(x+21)

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



85=x+(x+21)

We move all terms to the left:

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



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

x+(x+21)

We get rid of parentheses

x+x+21

We add all the numbers together, and all the variables

2x+21

Back to the equation:

-(2x+21)



We get rid of parentheses

-2x-21+85=0

We add all the numbers together, and all the variables

-2x+64=0

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

-2x=-64

x=-64/-2

x=+32

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