90=-6(n-7)

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



90=-6(n-7)

We move all terms to the left:

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



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

-6(n-7)

We multiply parentheses

-6n+42

Back to the equation:

-(-6n+42)



We get rid of parentheses

6n-42+90=0

We add all the numbers together, and all the variables

6n+48=0

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

6n=-48

n=-48/6

n=-8

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