221=115-y

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Solution for 221=115-y equation: 



221=115-y

We move all terms to the left:

221-(115-y)=0

We add all the numbers together, and all the variables

-(-1y+115)+221=0

We get rid of parentheses

1y-115+221=0

We add all the numbers together, and all the variables

y+106=0

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

y=-106

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