Question

Tìm phân số thích hợp.

Answer 1

\(\dfrac{2}{3}\times\dfrac{5}{7}=\dfrac{10}{21}\)

\(\dfrac{10}{21}:\dfrac{5}{7}=\dfrac{2}{3}\)

\(\dfrac{2}{3}:\dfrac{2}{9}=3\)

Answer 2

\(\dfrac{10}{21};\dfrac{2}{3};3\)