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-4.5v-7.78=9.62+4.2v
We move all terms to the left:
-4.5v-7.78-(9.62+4.2v)=0
We add all the numbers together, and all the variables
-4.5v-(4.2v+9.62)-7.78=0
We get rid of parentheses
-4.5v-4.2v-9.62-7.78=0
We add all the numbers together, and all the variables
-8.7v-17.4=0
We move all terms containing v to the left, all other terms to the right
-8.7v=17.4
v=17.4/-8.7
v=-2
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