81=159-w

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Solution for 81=159-w equation: 



81=159-w

We move all terms to the left:

81-(159-w)=0

We add all the numbers together, and all the variables

-(-1w+159)+81=0

We get rid of parentheses

1w-159+81=0

We add all the numbers together, and all the variables

w-78=0

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

w=78

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