-90=-3(-3n+8)-3

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Solution for -90=-3(-3n+8)-3 equation: 



-90=-3(-3n+8)-3

We move all terms to the left:

-90-(-3(-3n+8)-3)=0



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

-3(-3n+8)-3

We multiply parentheses

9n-24-3

We add all the numbers together, and all the variables

9n-27

Back to the equation:

-(9n-27)



We get rid of parentheses

-9n+27-90=0

We add all the numbers together, and all the variables

-9n-63=0

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

-9n=63

n=63/-9

n=-7

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