Tính biểu thức: a) 5/8 + 13/24 =

Hướng dẫn:

a) \(\frac{5}{8} + \frac{{13}}{{24}} = \frac{{15}}{{24}} + \frac{{13}}{{24}} = \frac{{28}}{{24}} = \frac{7}{6}\)

b) \(\frac{5}{3} \times \frac{3}{7} = \frac{5}{7}\)

c) \(\frac{8}{9} - \frac{{14}}{{18}} = \frac{8}{9} - \frac{7}{9} = \frac{1}{9}\)

d) \(\frac{5}{{12}}:\frac{5}{4} = \frac{5}{{12}} \times \frac{4}{5} = \frac{1}{3}\)