\(8\dfrac{1}{6}:2\dfrac{1}{2}=\dfrac{8\times6+1}{6}:\dfrac{2\times2+1}{2}=\dfrac{49}{6}:\dfrac{5}{2}\\ =\dfrac{49}{6}\times\dfrac{2}{5}=\dfrac{49\times2}{2\times3\times5}=\dfrac{49}{3\times5}=\dfrac{49}{15}\)
g, 8\(\dfrac{1}{6}\) : 2\(\dfrac{1}{2}\)
= \(\dfrac{49}{15}\)
\(8\dfrac{1}{6} : 2\dfrac{1}{2} \)
➝ \(\dfrac{49}{6} : \dfrac{5}{2}\)
→ \(\dfrac{49}{15}\)
\(\text{#Minh}\)