221=78-w

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Solution for 221=78-w equation: 



221=78-w

We move all terms to the left:

221-(78-w)=0

We add all the numbers together, and all the variables

-(-1w+78)+221=0

We get rid of parentheses

1w-78+221=0

We add all the numbers together, and all the variables

w+143=0

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

w=-143

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