63=-3(-7+2x)

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Solution for 63=-3(-7+2x) equation: 



63=-3(-7+2x)

We move all terms to the left:

63-(-3(-7+2x))=0

We add all the numbers together, and all the variables

-(-3(2x-7))+63=0



We calculate terms in parentheses: -(-3(2x-7)), so:

-3(2x-7)

We multiply parentheses

-6x+21

Back to the equation:

-(-6x+21)



We get rid of parentheses

6x-21+63=0

We add all the numbers together, and all the variables

6x+42=0

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

6x=-42

x=-42/6

x=-7

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