5y=(2y+21)

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



5y=(2y+21)

We move all terms to the left:

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



We calculate terms in parentheses: -((2y+21)), so:

(2y+21)

We get rid of parentheses

2y+21

Back to the equation:

-(2y+21)



We get rid of parentheses

5y-2y-21=0

We add all the numbers together, and all the variables

3y-21=0

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

3y=21

y=21/3

y=7

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