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v/2+5=7
We move all terms to the left:
v/2+5-(7)=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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