87=6v+21

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Solution for 87=6v+21 equation: 



87=6v+21

We move all terms to the left:

87-(6v+21)=0

We get rid of parentheses

-6v-21+87=0

We add all the numbers together, and all the variables

-6v+66=0

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

-6v=-66

v=-66/-6

v=+11

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