138=-2+7(-3v+8)

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Solution for 138=-2+7(-3v+8) equation: 



138=-2+7(-3v+8)

We move all terms to the left:

138-(-2+7(-3v+8))=0



We calculate terms in parentheses: -(-2+7(-3v+8)), so:

-2+7(-3v+8)

determiningTheFunctionDomain
7(-3v+8)-2

We multiply parentheses

-21v+56-2

We add all the numbers together, and all the variables

-21v+54

Back to the equation:

-(-21v+54)



We get rid of parentheses

21v-54+138=0

We add all the numbers together, and all the variables

21v+84=0

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

21v=-84

v=-84/21

v=-4

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