8v-40=-3(4-5v)

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Solution for 8v-40=-3(4-5v) equation: 



8v-40=-3(4-5v)

We move all terms to the left:

8v-40-(-3(4-5v))=0

We add all the numbers together, and all the variables

8v-(-3(-5v+4))-40=0



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

-3(-5v+4)

We multiply parentheses

15v-12

Back to the equation:

-(15v-12)



We get rid of parentheses

8v-15v+12-40=0

We add all the numbers together, and all the variables

-7v-28=0

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

-7v=28

v=28/-7

v=-4

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