So sánh các phân số sau :
a) \(\frac{1}{2};\frac{1}{3};\frac{2}{3}\) e) \(\frac{4}{9};-\frac{1}{2};\frac{3}{7}\)
b) \(\frac{3}{124};\frac{1}{41};\frac{5}{207};\frac{2}{83}\) f) \(\frac{134}{43};\frac{55}{21};\frac{74}{19};\frac{116}{37}\)
c)\(\frac{16}{9}\)và \(\frac{24}{13}\) g) \(\frac{-2525}{2929}\)và \(\frac{-217}{245}\)
d) \(\frac{27}{82}\)và \(\frac{26}{75}\) h) \(\frac{-49}{78}\)và \(\frac{64}{-95}\)
a. Ta có :
\(\frac{1}{2}< \frac{1}{3}\)
\(\frac{2}{3}>\frac{1}{3}\)
\(\Leftrightarrow\frac{1}{3}< \frac{1}{2}< \frac{2}{3}\)