90=-3+3(6n+7)

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Solution for 90=-3+3(6n+7) equation: 



90=-3+3(6n+7)

We move all terms to the left:

90-(-3+3(6n+7))=0



We calculate terms in parentheses: -(-3+3(6n+7)), so:

-3+3(6n+7)

determiningTheFunctionDomain
3(6n+7)-3

We multiply parentheses

18n+21-3

We add all the numbers together, and all the variables

18n+18

Back to the equation:

-(18n+18)



We get rid of parentheses

-18n-18+90=0

We add all the numbers together, and all the variables

-18n+72=0

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

-18n=-72

n=-72/-18

n=+4

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