21=-17+v

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Solution for 21=-17+v equation: 



21=-17+v

We move all terms to the left:

21-(-17+v)=0

We add all the numbers together, and all the variables

-(v-17)+21=0

We get rid of parentheses

-v+17+21=0

We add all the numbers together, and all the variables

-1v+38=0

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

-v=-38

v=-38/-1

v=+38

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