-x=x-3

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Solution for -x=x-3 equation: 



-x=x-3

We move all terms to the left:

-x-(x-3)=0

We add all the numbers together, and all the variables

-1x-(x-3)=0

We get rid of parentheses

-1x-x+3=0

We add all the numbers together, and all the variables

-2x+3=0

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

-2x=-3

x=-3/-2

x=1+1/2

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