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9v-31=5(v-3)
We move all terms to the left:
9v-31-(5(v-3))=0
We calculate terms in parentheses: -(5(v-3)), so:We get rid of parentheses
5(v-3)
We multiply parentheses
5v-15
Back to the equation:
-(5v-15)
9v-5v+15-31=0
We add all the numbers together, and all the variables
4v-16=0
We move all terms containing v to the left, all other terms to the right
4v=16
v=16/4
v=4
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