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39-4v=7(v-7)
We move all terms to the left:
39-4v-(7(v-7))=0
We calculate terms in parentheses: -(7(v-7)), so:We get rid of parentheses
7(v-7)
We multiply parentheses
7v-49
Back to the equation:
-(7v-49)
-4v-7v+49+39=0
We add all the numbers together, and all the variables
-11v+88=0
We move all terms containing v to the left, all other terms to the right
-11v=-88
v=-88/-11
v=+8
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