81=-9(n-2)

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Solution for 81=-9(n-2) equation: 



81=-9(n-2)

We move all terms to the left:

81-(-9(n-2))=0



We calculate terms in parentheses: -(-9(n-2)), so:

-9(n-2)

We multiply parentheses

-9n+18

Back to the equation:

-(-9n+18)



We get rid of parentheses

9n-18+81=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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