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47=7+8v
We move all terms to the left:
47-(7+8v)=0
We add all the numbers together, and all the variables
-(8v+7)+47=0
We get rid of parentheses
-8v-7+47=0
We add all the numbers together, and all the variables
-8v+40=0
We move all terms containing v to the left, all other terms to the right
-8v=-40
v=-40/-8
v=+5
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