-28=-7+3v

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



-28=-7+3v

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(3v-7)-28=0

We get rid of parentheses

-3v+7-28=0

We add all the numbers together, and all the variables

-3v-21=0

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

-3v=21

v=21/-3

v=-7

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