231=142-w

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Solution for 231=142-w equation: 



231=142-w

We move all terms to the left:

231-(142-w)=0

We add all the numbers together, and all the variables

-(-1w+142)+231=0

We get rid of parentheses

1w-142+231=0

We add all the numbers together, and all the variables

w+89=0

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

w=-89

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