-81=3(4v+5)

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Solution for -81=3(4v+5) equation: 



-81=3(4v+5)

We move all terms to the left:

-81-(3(4v+5))=0



We calculate terms in parentheses: -(3(4v+5)), so:

3(4v+5)

We multiply parentheses

12v+15

Back to the equation:

-(12v+15)



We get rid of parentheses

-12v-15-81=0

We add all the numbers together, and all the variables

-12v-96=0

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

-12v=96

v=96/-12

v=-8

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