-81=-5+2(4+7v)

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Solution for -81=-5+2(4+7v) equation: 



-81=-5+2(4+7v)

We move all terms to the left:

-81-(-5+2(4+7v))=0

We add all the numbers together, and all the variables

-(-5+2(7v+4))-81=0



We calculate terms in parentheses: -(-5+2(7v+4)), so:

-5+2(7v+4)

determiningTheFunctionDomain
2(7v+4)-5

We multiply parentheses

14v+8-5

We add all the numbers together, and all the variables

14v+3

Back to the equation:

-(14v+3)



We get rid of parentheses

-14v-3-81=0

We add all the numbers together, and all the variables

-14v-84=0

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

-14v=84

v=84/-14

v=-6

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