21=2v-17

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Solution for 21=2v-17 equation: 



21=2v-17

We move all terms to the left:

21-(2v-17)=0

We get rid of parentheses

-2v+17+21=0

We add all the numbers together, and all the variables

-2v+38=0

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

-2v=-38

v=-38/-2

v=+19

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