V-7+3v=21

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Solution for V-7+3v=21 equation: 



-7+3V=21

We move all terms to the left:

-7+3V-(21)=0

We add all the numbers together, and all the variables

3V-28=0

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

3V=28

V=28/3

V=9+1/3

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