7w+4=9(w-4)

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Solution for 7w+4=9(w-4) equation: 



7w+4=9(w-4)

We move all terms to the left:

7w+4-(9(w-4))=0



We calculate terms in parentheses: -(9(w-4)), so:

9(w-4)

We multiply parentheses

9w-36

Back to the equation:

-(9w-36)



We get rid of parentheses

7w-9w+36+4=0

We add all the numbers together, and all the variables

-2w+40=0

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

-2w=-40

w=-40/-2

w=+20

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