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-40=-v/9
We move all terms to the left:
-40-(-v/9)=0
We get rid of parentheses
v/9-40=0
We multiply all the terms by the denominator
v-40*9=0
We add all the numbers together, and all the variables
v-360=0
We move all terms containing v to the left, all other terms to the right
v=360
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