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20.5=-8.5(4v+3.5)
We move all terms to the left:
20.5-(-8.5(4v+3.5))=0
We calculate terms in parentheses: -(-8.5(4v+3.5)), so:We get rid of parentheses
-8.5(4v+3.5)
We multiply parentheses
-34v-29.75
Back to the equation:
-(-34v-29.75)
34v+29.75+20.5=0
We add all the numbers together, and all the variables
34v+50.25=0
We move all terms containing v to the left, all other terms to the right
34v=-50.25
v=-50.25/34
v=-1+7.22222222222/15.1111111111
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