-7w+42=-9(w-4)

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Solution for -7w+42=-9(w-4) equation: 



-7w+42=-9(w-4)

We move all terms to the left:

-7w+42-(-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+42=0

We add all the numbers together, and all the variables

2w+6=0

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

2w=-6

w=-6/2

w=-3

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