12-3v=-21

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Solution for 12-3v=-21 equation:



12-3v=-21
We move all terms to the left:
12-3v-(-21)=0
We add all the numbers together, and all the variables
-3v+33=0
We move all terms containing v to the left, all other terms to the right
-3v=-33
v=-33/-3
v=+11

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