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-10+9v=7-8v
We move all terms to the left:
-10+9v-(7-8v)=0
We add all the numbers together, and all the variables
9v-(-8v+7)-10=0
We get rid of parentheses
9v+8v-7-10=0
We add all the numbers together, and all the variables
17v-17=0
We move all terms containing v to the left, all other terms to the right
17v=17
v=17/17
v=1
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