-21=v-2

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Solution for -21=v-2 equation: 



-21=v-2

We move all terms to the left:

-21-(v-2)=0

We get rid of parentheses

-v+2-21=0

We add all the numbers together, and all the variables

-1v-19=0

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

-v=19

v=19/-1

v=-19

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