197=123-x

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Solution for 197=123-x equation: 



197=123-x

We move all terms to the left:

197-(123-x)=0

We add all the numbers together, and all the variables

-(-1x+123)+197=0

We get rid of parentheses

1x-123+197=0

We add all the numbers together, and all the variables

x+74=0

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

x=-74

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