Cách 1:
\(\frac{4}{7}:\frac{13}{24}+\frac{5}{7}:\frac{13}{24}\)
=( \(\frac{4}{7}+\frac{5}{7}\)):\(\frac{13}{24}\)
= \(\frac{9}{7}:\frac{13}{24}=\frac{216}{91}\)
Cách 2:
\(\frac{4}{7}:\frac{13}{24}+\frac{5}{7}:\frac{13}{24}=\frac{96}{91}+\frac{120}{91}=\frac{216}{91}\)