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-1.2+v/3=-8.7
We move all terms to the left:
-1.2+v/3-(-8.7)=0
We add all the numbers together, and all the variables
v/3+7.5=0
We multiply all the terms by the denominator
v+(7.5)*3=0
We add all the numbers together, and all the variables
v+22.5=0
We move all terms containing v to the left, all other terms to the right
v=-22.5
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