Nối: các biểu thức

\[\frac{5}{3} + \frac{7}{6} = \frac{{10}}{6} + \frac{7}{6} = \frac{{17}}{6}\]

\[\frac{8}{{15}} + \frac{2}{5} = \frac{8}{{15}} + \frac{6}{{15}} = \frac{{14}}{{15}}\]

\[\frac{1}{2} + \frac{5}{4} = \frac{2}{4} + \frac{5}{4} = \frac{7}{4}\]

\[\frac{7}{4} + \frac{{11}}{{20}} = \frac{{35}}{{20}} + \frac{{11}}{{20}} = \frac{{46}}{{20}} = \frac{{23}}{{10}}\]

\[\frac{{19}}{{12}} + \frac{4}{3} = \frac{{19}}{{12}} + \frac{{16}}{{12}} = \frac{{35}}{{12}}\]