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12=-7v+4(v+6)
We move all terms to the left:
12-(-7v+4(v+6))=0
We calculate terms in parentheses: -(-7v+4(v+6)), so:We get rid of parentheses
-7v+4(v+6)
We multiply parentheses
-7v+4v+24
We add all the numbers together, and all the variables
-3v+24
Back to the equation:
-(-3v+24)
3v-24+12=0
We add all the numbers together, and all the variables
3v-12=0
We move all terms containing v to the left, all other terms to the right
3v=12
v=12/3
v=4
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