-81=-9(w+5)

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Solution for -81=-9(w+5) equation: 



-81=-9(w+5)

We move all terms to the left:

-81-(-9(w+5))=0



We calculate terms in parentheses: -(-9(w+5)), so:

-9(w+5)

We multiply parentheses

-9w-45

Back to the equation:

-(-9w-45)



We get rid of parentheses

9w+45-81=0

We add all the numbers together, and all the variables

9w-36=0

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

9w=36

w=36/9

w=4

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