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87=185-v
We move all terms to the left:
87-(185-v)=0
We add all the numbers together, and all the variables
-(-1v+185)+87=0
We get rid of parentheses
1v-185+87=0
We add all the numbers together, and all the variables
v-98=0
We move all terms containing v to the left, all other terms to the right
v=98
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