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(v+12)+2v+30=180
We move all terms to the left:
(v+12)+2v+30-(180)=0
We add all the numbers together, and all the variables
2v+(v+12)-150=0
We get rid of parentheses
2v+v+12-150=0
We add all the numbers together, and all the variables
3v-138=0
We move all terms containing v to the left, all other terms to the right
3v=138
v=138/3
v=46
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