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28+18v=-21+14v
We move all terms to the left:
28+18v-(-21+14v)=0
We add all the numbers together, and all the variables
18v-(14v-21)+28=0
We get rid of parentheses
18v-14v+21+28=0
We add all the numbers together, and all the variables
4v+49=0
We move all terms containing v to the left, all other terms to the right
4v=-49
v=-49/4
v=-12+1/4
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