2(x+21)=(5x+21)

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Solution for 2(x+21)=(5x+21) equation: 



2(x+21)=(5x+21)

We move all terms to the left:

2(x+21)-((5x+21))=0

We multiply parentheses

2x-((5x+21))+42=0



We calculate terms in parentheses: -((5x+21)), so:

(5x+21)

We get rid of parentheses

5x+21

Back to the equation:

-(5x+21)



We get rid of parentheses

2x-5x-21+42=0

We add all the numbers together, and all the variables

-3x+21=0

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

-3x=-21

x=-21/-3

x=+7

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