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8=8v+4(v-10)
We move all terms to the left:
8-(8v+4(v-10))=0
We calculate terms in parentheses: -(8v+4(v-10)), so:We get rid of parentheses
8v+4(v-10)
We multiply parentheses
8v+4v-40
We add all the numbers together, and all the variables
12v-40
Back to the equation:
-(12v-40)
-12v+40+8=0
We add all the numbers together, and all the variables
-12v+48=0
We move all terms containing v to the left, all other terms to the right
-12v=-48
v=-48/-12
v=+4
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