-28=-7+3w

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Solution for -28=-7+3w equation: 



-28=-7+3w

We move all terms to the left:

-28-(-7+3w)=0

We add all the numbers together, and all the variables

-(3w-7)-28=0

We get rid of parentheses

-3w+7-28=0

We add all the numbers together, and all the variables

-3w-21=0

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

-3w=21

w=21/-3

w=-7

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