15v=8v+21

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Solution for 15v=8v+21 equation: 



15v=8v+21

We move all terms to the left:

15v-(8v+21)=0

We get rid of parentheses

15v-8v-21=0

We add all the numbers together, and all the variables

7v-21=0

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

7v=21

v=21/7

v=3

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