7+2v=21

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Solution for 7+2v=21 equation: 



7+2v=21

We move all terms to the left:

7+2v-(21)=0

We add all the numbers together, and all the variables

2v-14=0

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

2v=14

v=14/2

v=7

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