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-4v+5+4.5v=15.5
We move all terms to the left:
-4v+5+4.5v-(15.5)=0
We add all the numbers together, and all the variables
0.5v-10.5=0
We move all terms containing v to the left, all other terms to the right
0.5v=10.5
v=10.5/0.5
v=21
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