Chuyển các hỗn số 3 5 /9 ; 2 1/ 4 ; 1 4 /5 ; 2 7 /10 ; 4 5 /6 ; 3 2/ 7 ; 1 5 /8 ; 5 1/7 thành phân số

\[3\frac{5}{9} = 3 + \frac{5}{9} = \frac{{27}}{9} + \frac{5}{9} = \frac{{32}}{9}\]

\[2\frac{1}{4} = 2 + \frac{1}{4} = \frac{8}{4} + \frac{1}{4} = \frac{9}{4}\]

\[1\frac{4}{5} = 1 + \frac{4}{5} = \frac{5}{5} + \frac{4}{5} = \frac{9}{5}\]

\[2\frac{7}{{10}} = 2 + \frac{7}{{10}} = \frac{{20}}{{10}} + \frac{7}{{10}} = \frac{{27}}{{10}}\]

\[4\frac{5}{6} = 4 + \frac{5}{6} = \frac{{24}}{6} + \frac{5}{6} = \frac{{29}}{6}\]

\[3\frac{2}{7} = 3 + \frac{2}{7} = \frac{{21}}{7} + \frac{2}{7} = \frac{{23}}{7}\]

\[1\frac{5}{8} = 1 + \frac{5}{8} = \frac{8}{8} + \frac{5}{8} = \frac{{13}}{8}\]

\[5\frac{1}{7} = 5 + \frac{1}{7} = \frac{{35}}{7} + \frac{1}{7} = \frac{{36}}{7}\]