-21=-7w+4(w-6)

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Solution for -21=-7w+4(w-6) equation: 



-21=-7w+4(w-6)

We move all terms to the left:

-21-(-7w+4(w-6))=0



We calculate terms in parentheses: -(-7w+4(w-6)), so:

-7w+4(w-6)

We multiply parentheses

-7w+4w-24

We add all the numbers together, and all the variables

-3w-24

Back to the equation:

-(-3w-24)



We get rid of parentheses

3w+24-21=0

We add all the numbers together, and all the variables

3w+3=0

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

3w=-3

w=-3/3

w=-1

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