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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



We calculate terms in parentheses: -(-8(-4v+5)), so:

-8(-4v+5)

We multiply parentheses

32v-40

Back to the equation:

-(32v-40)



We get rid of parentheses

-8v-32v+40+40=0

We add all the numbers together, and all the variables

-40v+80=0

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

-40v=-80

v=-80/-40

v=+2

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