X+x=x-1

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Solution for X+x=x-1 equation:



X+X=X-1
We move all terms to the left:
X+X-(X-1)=0
We add all the numbers together, and all the variables
2X-(X-1)=0
We get rid of parentheses
2X-X+1=0
We add all the numbers together, and all the variables
X+1=0
We move all terms containing X to the left, all other terms to the right
X=-1

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