-21=5(w-6)-8w

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Solution for -21=5(w-6)-8w equation: 



-21=5(w-6)-8w

We move all terms to the left:

-21-(5(w-6)-8w)=0



We calculate terms in parentheses: -(5(w-6)-8w), so:

5(w-6)-8w

We add all the numbers together, and all the variables

-8w+5(w-6)

We multiply parentheses

-8w+5w-30

We add all the numbers together, and all the variables

-3w-30

Back to the equation:

-(-3w-30)



We get rid of parentheses

3w+30-21=0

We add all the numbers together, and all the variables

3w+9=0

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

3w=-9

w=-9/3

w=-3

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