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78=v-7v+7
We move all terms to the left:
78-(v-7v+7)=0
We add all the numbers together, and all the variables
-(-6v+7)+78=0
We get rid of parentheses
6v-7+78=0
We add all the numbers together, and all the variables
6v+71=0
We move all terms containing v to the left, all other terms to the right
6v=-71
v=-71/6
v=-11+5/6
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