Question

Tính:

Answer 1

\(\dfrac{2}{3}\times\dfrac{4}{7}=\dfrac{2\times4}{3\times7}=\dfrac{8}{21}\)

\(\dfrac{3}{8}\times\dfrac{7}{5}=\dfrac{3\times7}{8\times5}=\dfrac{21}{40}\)

\(\dfrac{1}{7}\times\dfrac{5}{8}=\dfrac{1\times5}{7\times8}=\dfrac{5}{56}\)