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7=4+v/3
We move all terms to the left:
7-(4+v/3)=0
We add all the numbers together, and all the variables
-(v/3+4)+7=0
We get rid of parentheses
-v/3-4+7=0
We multiply all the terms by the denominator
-v-4*3+7*3=0
We add all the numbers together, and all the variables
-1v+9=0
We move all terms containing v to the left, all other terms to the right
-v=-9
v=-9/-1
v=+9
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