-9=3(w+7)-6w

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Solution for -9=3(w+7)-6w equation: 



-9=3(w+7)-6w

We move all terms to the left:

-9-(3(w+7)-6w)=0



We calculate terms in parentheses: -(3(w+7)-6w), so:

3(w+7)-6w

We add all the numbers together, and all the variables

-6w+3(w+7)

We multiply parentheses

-6w+3w+21

We add all the numbers together, and all the variables

-3w+21

Back to the equation:

-(-3w+21)



We get rid of parentheses

3w-21-9=0

We add all the numbers together, and all the variables

3w-30=0

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

3w=30

w=30/3

w=10

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