-81=-9(q+18)

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Solution for -81=-9(q+18) equation: 



-81=-9(q+18)

We move all terms to the left:

-81-(-9(q+18))=0



We calculate terms in parentheses: -(-9(q+18)), so:

-9(q+18)

We multiply parentheses

-9q-162

Back to the equation:

-(-9q-162)



We get rid of parentheses

9q+162-81=0

We add all the numbers together, and all the variables

9q+81=0

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

9q=-81

q=-81/9

q=-9

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