X-2x=-x

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Solution for X-2x=-x equation: 



X-2X=-X

We move all terms to the left:

X-2X-(-X)=0

We add all the numbers together, and all the variables

X-2X-(-1X)=0

We add all the numbers together, and all the variables

-1X-(-1X)=0

We get rid of parentheses

-1X+1X=0

We add all the numbers together, and all the variables

=0

X=0/1

X=0

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