213=257-x

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Solution for 213=257-x equation: 



213=257-x

We move all terms to the left:

213-(257-x)=0

We add all the numbers together, and all the variables

-(-1x+257)+213=0

We get rid of parentheses

1x-257+213=0

We add all the numbers together, and all the variables

x-44=0

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

x=44

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