21=2(w+3)-5w

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Solution for 21=2(w+3)-5w equation: 



21=2(w+3)-5w

We move all terms to the left:

21-(2(w+3)-5w)=0



We calculate terms in parentheses: -(2(w+3)-5w), so:

2(w+3)-5w

We add all the numbers together, and all the variables

-5w+2(w+3)

We multiply parentheses

-5w+2w+6

We add all the numbers together, and all the variables

-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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