\(\dfrac{1}{3};\dfrac{2}{5};\dfrac{7}{15}\)
\(MSC:15\)
\(\dfrac{2}{5}=\dfrac{2.3}{5.3}=\dfrac{6}{15}\)
\(\dfrac{1}{3}=\dfrac{1.5}{3.5}=\dfrac{5}{15}\)
Vì 5<6<7 nên \(\dfrac{1}{3}< \dfrac{2}{5}< \dfrac{7}{15}\)
\(\dfrac{1}{3},\dfrac{2}{5}v\text{à}\dfrac{7}{15}\)