21=246-w

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Solution for 21=246-w equation: 



21=246-w

We move all terms to the left:

21-(246-w)=0

We add all the numbers together, and all the variables

-(-1w+246)+21=0

We get rid of parentheses

1w-246+21=0

We add all the numbers together, and all the variables

w-225=0

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

w=225

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