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-8=12-4v
We move all terms to the left:
-8-(12-4v)=0
We add all the numbers together, and all the variables
-(-4v+12)-8=0
We get rid of parentheses
4v-12-8=0
We add all the numbers together, and all the variables
4v-20=0
We move all terms containing v to the left, all other terms to the right
4v=20
v=20/4
v=5
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