220=40-v

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Solution for 220=40-v equation: 



220=40-v

We move all terms to the left:

220-(40-v)=0

We add all the numbers together, and all the variables

-(-1v+40)+220=0

We get rid of parentheses

1v-40+220=0

We add all the numbers together, and all the variables

v+180=0

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

v=-180

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