(x+21)=(5x-39)

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Solution for (x+21)=(5x-39) equation: 



(x+21)=(5x-39)

We move all terms to the left:

(x+21)-((5x-39))=0

We get rid of parentheses

x-((5x-39))+21=0



We calculate terms in parentheses: -((5x-39)), so:

(5x-39)

We get rid of parentheses

5x-39

Back to the equation:

-(5x-39)



We get rid of parentheses

x-5x+39+21=0

We add all the numbers together, and all the variables

-4x+60=0

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

-4x=-60

x=-60/-4

x=+15

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