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v/2+-1=-3
We move all terms to the left:
v/2+-1-(-3)=0
We add all the numbers together, and all the variables
v/2+2=0
We multiply all the terms by the denominator
v+2*2=0
We add all the numbers together, and all the variables
v+4=0
We move all terms containing v to the left, all other terms to the right
v=-4
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