-1=2-x

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Solution for -1=2-x equation: 



-1=2-x

We move all terms to the left:

-1-(2-x)=0

We add all the numbers together, and all the variables

-(-1x+2)-1=0

We get rid of parentheses

1x-2-1=0

We add all the numbers together, and all the variables

x-3=0

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

x=3

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