10v=21+7v

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Solution for 10v=21+7v equation: 



10v=21+7v

We move all terms to the left:

10v-(21+7v)=0

We add all the numbers together, and all the variables

10v-(7v+21)=0

We get rid of parentheses

10v-7v-21=0

We add all the numbers together, and all the variables

3v-21=0

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

3v=21

v=21/3

v=7

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