Tính.

\(\frac{7}{4}\) + \(\frac{7}{6}\) = \(\frac{{21}}{{12}}\) + \[\frac{{14}}{{12}}\] = \(\frac{{35}}{{12}}\)

\(\frac{{100}}{{110}}\) – \(\frac{{56}}{{88}}\) = \(\frac{{10}}{{11}}\) – \(\frac{7}{{11}}\) = \(\frac{3}{{11}}\)

\(\frac{5}{6}\) × \(\frac{{24}}{{11}}\) = \(\frac{{20}}{{11}}\)

\(\frac{7}{6}\) : \(\frac{4}{3}\) = \(\frac{7}{6}\) × \(\frac{3}{4}\) = \(\frac{7}{8}\)