\(\dfrac{2}{5}=\dfrac{24}{60}\)
\(1\dfrac{3}{4}=\dfrac{7}{4}=\dfrac{105}{60}\)
\(2=\dfrac{120}{60}\)
\(\dfrac{2}{3}=\dfrac{40}{60}\)
\(2\dfrac{1}{4}=\dfrac{9}{4}=\dfrac{135}{60}\)
Cùng mẫu ta so sánh tử: 24<40<105<120<135
\(\Rightarrow\dfrac{2}{5}< 1\dfrac{3}{4}< 2< \dfrac{2}{3}< 2\dfrac{1}{4}\)