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19+18v+12=-20+15v
We move all terms to the left:
19+18v+12-(-20+15v)=0
We add all the numbers together, and all the variables
18v-(15v-20)+19+12=0
We add all the numbers together, and all the variables
18v-(15v-20)+31=0
We get rid of parentheses
18v-15v+20+31=0
We add all the numbers together, and all the variables
3v+51=0
We move all terms containing v to the left, all other terms to the right
3v=-51
v=-51/3
v=-17
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