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23=-7v+3(v-3)
We move all terms to the left:
23-(-7v+3(v-3))=0
We calculate terms in parentheses: -(-7v+3(v-3)), so:We get rid of parentheses
-7v+3(v-3)
We multiply parentheses
-7v+3v-9
We add all the numbers together, and all the variables
-4v-9
Back to the equation:
-(-4v-9)
4v+9+23=0
We add all the numbers together, and all the variables
4v+32=0
We move all terms containing v to the left, all other terms to the right
4v=-32
v=-32/4
v=-8
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