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X/X+12=13
We move all terms to the left:
X/X+12-(13)=0
Domain of the equation: X!=0We add all the numbers together, and all the variables
X∈R
X/X-1=0
Fractions to decimals
-1+1=0
We add all the numbers together, and all the variables
=0
X=0/1
X=0
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