63=(3x-21)

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Solution for 63=(3x-21) equation: 



63=(3x-21)

We move all terms to the left:

63-((3x-21))=0



We calculate terms in parentheses: -((3x-21)), so:

(3x-21)

We get rid of parentheses

3x-21

Back to the equation:

-(3x-21)



We get rid of parentheses

-3x+21+63=0

We add all the numbers together, and all the variables

-3x+84=0

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

-3x=-84

x=-84/-3

x=+28

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