279=121-x

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Solution for 279=121-x equation: 



279=121-x

We move all terms to the left:

279-(121-x)=0

We add all the numbers together, and all the variables

-(-1x+121)+279=0

We get rid of parentheses

1x-121+279=0

We add all the numbers together, and all the variables

x+158=0

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

x=-158

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