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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