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4v+3v=-7+8v
We move all terms to the left:
4v+3v-(-7+8v)=0
We add all the numbers together, and all the variables
4v+3v-(8v-7)=0
We add all the numbers together, and all the variables
7v-(8v-7)=0
We get rid of parentheses
7v-8v+7=0
We add all the numbers together, and all the variables
-1v+7=0
We move all terms containing v to the left, all other terms to the right
-v=-7
v=-7/-1
v=+7
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