+) \(\dfrac{4}{11}< \dfrac{6}{11}\);
+) \(\dfrac{15}{17}> \dfrac{10}{17}\);
+) \(\dfrac{6}{7} = \dfrac{6\times 2}{7 \times 2} = \dfrac{12}{14} \)
Vậy \(\dfrac{6}{7} = \dfrac{12}{14} \) ;
+) \(\dfrac{2}{3} = \dfrac{2\times 4}{3 \times 4} = \dfrac{8}{12} \) ; \(\dfrac{3}{4} = \dfrac{3\times 3}{4 \times 3} = \dfrac{9}{12} \)
Mà \(\dfrac{8}{12} < \dfrac{9}{12} \)
Vậy \(\dfrac{2}{3} < \dfrac{3}{4} \).
