3(w+3)-5w=21

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



3(w+3)-5w=21

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

-5w+3w+9-21=0

We add all the numbers together, and all the variables

-2w-12=0

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

-2w=12

w=12/-2

w=-6

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