Hoàn thiện phép tính sau: \(\frac{5}{{16}} + \frac{3}{4} \times \frac{2}{8}\) =

\(\frac{5}{{16}} + \frac{3}{4} \times \frac{2}{8} = \frac{5}{{16}} + \frac{6}{{32}} = \frac{5}{{16}} + \frac{3}{{16}} = \frac{8}{{16}} = \frac{1}{2}\) =

\[\begin{array}{l}\frac{5}{4}:x = \frac{4}{9}\\x = \frac{5}{4}:\frac{4}{9} = \frac{{45}}{{16}}\end{array}\]