-231=-7(-3+6v)

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Solution for -231=-7(-3+6v) equation: 



-231=-7(-3+6v)

We move all terms to the left:

-231-(-7(-3+6v))=0

We add all the numbers together, and all the variables

-(-7(6v-3))-231=0



We calculate terms in parentheses: -(-7(6v-3)), so:

-7(6v-3)

We multiply parentheses

-42v+21

Back to the equation:

-(-42v+21)



We get rid of parentheses

42v-21-231=0

We add all the numbers together, and all the variables

42v-252=0

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

42v=252

v=252/42

v=6

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