220=121-v

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Solution for 220=121-v equation: 



220=121-v

We move all terms to the left:

220-(121-v)=0

We add all the numbers together, and all the variables

-(-1v+121)+220=0

We get rid of parentheses

1v-121+220=0

We add all the numbers together, and all the variables

v+99=0

We move all terms containing v to the left, all other terms to the right

v=-99

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