21=-w+242

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Solution for 21=-w+242 equation: 



21=-w+242

We move all terms to the left:

21-(-w+242)=0

We add all the numbers together, and all the variables

-(-1w+242)+21=0

We get rid of parentheses

1w-242+21=0

We add all the numbers together, and all the variables

w-221=0

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

w=221

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