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

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



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

We move all terms to the left:

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

We get rid of parentheses

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



We calculate terms in parentheses: -(-2(w-21)), so:

-2(w-21)

We multiply parentheses

-2w+42

Back to the equation:

-(-2w+42)



We get rid of parentheses

w+2w-42+3=0

We add all the numbers together, and all the variables

3w-39=0

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

3w=39

w=39/3

w=13

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