Question

Tính:

\(\dfrac{9}{2}\times\dfrac{4}{5}\)                       \(\dfrac{8}{7}:\dfrac{2}{3}\)                      \(4\times\dfrac{5}{9}\)                         \(\dfrac{3}{8}:2\)

Answer 1

 $\frac{9}{2} \times \frac{4}{5} = \frac{{36}}{{10}} = \frac{{18}}{5}$                                    

 $\frac{8}{7}:\frac{2}{3} = \frac{8}{7} \times \frac{3}{2} = \frac{{24}}{{14}} = \frac{{12}}{7}$         

$4 \times \frac{5}{9} = \frac{{4 \times 5}}{9} = \frac{{20}}{9}$                                                

 $\frac{3}{8}:2 = \frac{3}{8}:\frac{2}{1} = \frac{3}{8} \times \frac{1}{2} = \frac{3}{{16}}$