-v/3=21

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Solution for -v/3=21 equation: 



-v/3=21

We move all terms to the left:

-v/3-(21)=0

We multiply all the terms by the denominator


-v-21*3=0

We add all the numbers together, and all the variables

-1v-63=0

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

-v=63

v=63/-1

v=-63

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