3-7v=21

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Solution for 3-7v=21 equation: 



3-7v=21

We move all terms to the left:

3-7v-(21)=0

We add all the numbers together, and all the variables

-7v-18=0

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

-7v=18

v=18/-7

v=-2+4/7

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