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261=151-v
We move all terms to the left:
261-(151-v)=0
We add all the numbers together, and all the variables
-(-1v+151)+261=0
We get rid of parentheses
1v-151+261=0
We add all the numbers together, and all the variables
v+110=0
We move all terms containing v to the left, all other terms to the right
v=-110
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