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-12v+24+4v=7v+42
We move all terms to the left:
-12v+24+4v-(7v+42)=0
We add all the numbers together, and all the variables
-8v-(7v+42)+24=0
We get rid of parentheses
-8v-7v-42+24=0
We add all the numbers together, and all the variables
-15v-18=0
We move all terms containing v to the left, all other terms to the right
-15v=18
v=18/-15
v=-1+1/5
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