\(x-x.\frac{1}{2}-x=0\)
<=>\(\frac{2\cdot x}{2}-\frac{1\cdot x}{2}-\frac{2\cdot x}{2}=\frac{2\cdot x}{2}\)
<=> 2x - x - 2x = 2x
<=>-x = -2x
<=> -x - 2x = 0
<=> -3x = 0
<=> x = 0.
Vậy x = 0.
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