81=9(w+1)

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Solution for 81=9(w+1) equation: 



81=9(w+1)

We move all terms to the left:

81-(9(w+1))=0



We calculate terms in parentheses: -(9(w+1)), so:

9(w+1)

We multiply parentheses

9w+9

Back to the equation:

-(9w+9)



We get rid of parentheses

-9w-9+81=0

We add all the numbers together, and all the variables

-9w+72=0

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

-9w=-72

w=-72/-9

w=+8

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