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81=-7+8(v+3)
We move all terms to the left:
81-(-7+8(v+3))=0
We calculate terms in parentheses: -(-7+8(v+3)), so:We get rid of parentheses
-7+8(v+3)
determiningTheFunctionDomain 8(v+3)-7
We multiply parentheses
8v+24-7
We add all the numbers together, and all the variables
8v+17
Back to the equation:
-(8v+17)
-8v-17+81=0
We add all the numbers together, and all the variables
-8v+64=0
We move all terms containing v to the left, all other terms to the right
-8v=-64
v=-64/-8
v=+8
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