9w+31=-7(w-9)

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Solution for 9w+31=-7(w-9) equation: 



9w+31=-7(w-9)

We move all terms to the left:

9w+31-(-7(w-9))=0



We calculate terms in parentheses: -(-7(w-9)), so:

-7(w-9)

We multiply parentheses

-7w+63

Back to the equation:

-(-7w+63)



We get rid of parentheses

9w+7w-63+31=0

We add all the numbers together, and all the variables

16w-32=0

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

16w=32

w=32/16

w=2

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