-21+7n=8(2n+3)

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Solution for -21+7n=8(2n+3) equation: 



-21+7n=8(2n+3)

We move all terms to the left:

-21+7n-(8(2n+3))=0



We calculate terms in parentheses: -(8(2n+3)), so:

8(2n+3)

We multiply parentheses

16n+24

Back to the equation:

-(16n+24)



We get rid of parentheses

7n-16n-24-21=0

We add all the numbers together, and all the variables

-9n-45=0

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

-9n=45

n=45/-9

n=-5

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