-7v-1=-9(v-1)

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Solution for -7v-1=-9(v-1) equation: 



-7v-1=-9(v-1)

We move all terms to the left:

-7v-1-(-9(v-1))=0



We calculate terms in parentheses: -(-9(v-1)), so:

-9(v-1)

We multiply parentheses

-9v+9

Back to the equation:

-(-9v+9)



We get rid of parentheses

-7v+9v-9-1=0

We add all the numbers together, and all the variables

2v-10=0

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

2v=10

v=10/2

v=5

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