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279=144-v
We move all terms to the left:
279-(144-v)=0
We add all the numbers together, and all the variables
-(-1v+144)+279=0
We get rid of parentheses
1v-144+279=0
We add all the numbers together, and all the variables
v+135=0
We move all terms containing v to the left, all other terms to the right
v=-135
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