-21=-3(w+2)

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Solution for -21=-3(w+2) equation: 



-21=-3(w+2)

We move all terms to the left:

-21-(-3(w+2))=0



We calculate terms in parentheses: -(-3(w+2)), so:

-3(w+2)

We multiply parentheses

-3w-6

Back to the equation:

-(-3w-6)



We get rid of parentheses

3w+6-21=0

We add all the numbers together, and all the variables

3w-15=0

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

3w=15

w=15/3

w=5

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