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100=-5(4v-8)
We move all terms to the left:
100-(-5(4v-8))=0
We calculate terms in parentheses: -(-5(4v-8)), so:We get rid of parentheses
-5(4v-8)
We multiply parentheses
-20v+40
Back to the equation:
-(-20v+40)
20v-40+100=0
We add all the numbers together, and all the variables
20v+60=0
We move all terms containing v to the left, all other terms to the right
20v=-60
v=-60/20
v=-3
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