81=-7-8v

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Solution for 81=-7-8v equation: 



81=-7-8v

We move all terms to the left:

81-(-7-8v)=0

We add all the numbers together, and all the variables

-(-8v-7)+81=0

We get rid of parentheses

8v+7+81=0

We add all the numbers together, and all the variables

8v+88=0

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

8v=-88

v=-88/8

v=-11

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