221=56-x

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Solution for 221=56-x equation: 



221=56-x

We move all terms to the left:

221-(56-x)=0

We add all the numbers together, and all the variables

-(-1x+56)+221=0

We get rid of parentheses

1x-56+221=0

We add all the numbers together, and all the variables

x+165=0

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

x=-165

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