Ta có:
\(y=\frac{123}{369}=\frac{1}{3}\)
Vì \(\frac{1}{3}< \frac{2}{3}\)nên y < x
\(x=\frac{2}{3}=\frac{2\cdot123}{3\cdot123}=2.\frac{123}{369}\)
\(\text{Vì }2.\frac{123}{369}>\frac{123}{369}\)
\(\Leftrightarrow\text{ }x>y\)
Ta có :
\(y=\frac{123}{369}=\frac{1}{3}\)
Vì \(\frac{2}{3}>\frac{1}{3}\)nên x > y.
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