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

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



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

We move all terms to the left:

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



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

8(n-2)

We multiply parentheses

8n-16

Back to the equation:

-(8n-16)



We get rid of parentheses

7n-8n+16-21=0

We add all the numbers together, and all the variables

-1n-5=0

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

-n=5

n=5/-1

n=-5

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