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1700=1800-5v
We move all terms to the left:
1700-(1800-5v)=0
We add all the numbers together, and all the variables
-(-5v+1800)+1700=0
We get rid of parentheses
5v-1800+1700=0
We add all the numbers together, and all the variables
5v-100=0
We move all terms containing v to the left, all other terms to the right
5v=100
v=100/5
v=20
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