a) \(\dfrac{6}{11}=\dfrac{18}{33}\)
\(\dfrac{2}{3}=\dfrac{22}{33}\)
vì \(\dfrac{18}{33}< \dfrac{22}{33}< \dfrac{23}{33}\Rightarrow\dfrac{6}{11}< \dfrac{2}{3}< \dfrac{23}{33}\)
b) \(\dfrac{1}{2}=\dfrac{4}{8}\)
\(\dfrac{3}{4}=\dfrac{6}{8}\)
vì \(\dfrac{4}{8}< \dfrac{5}{8}< \dfrac{6}{8}\Rightarrow\dfrac{1}{2}< \dfrac{5}{8}< \dfrac{3}{4}\)
Bài c tương tự, bạn tự làm nhé.