a) [tex]\frac{9}{10} : \frac{3}{8} = \frac{9}{10} * \frac{8}{3} = \frac{3}{5} * \frac{4}{1} = \frac{12}{5} = 2\frac{2}{5}[/tex]
b) [tex]\frac{2}{5} : \frac{7}{25} = \frac{2}{5} * \frac{25}{7} = \frac{2}{1} * \frac{5}{7} = \frac{10}{7} = 1 \frac{3}{7}[/tex]
c) [tex]\frac{5}{9} : \frac{35}{6} = \frac{5}{9} * \frac{6}{35} = \frac{1}{3} * \frac{2}{7} = \frac{2}{21}[/tex]
d) [tex]3\frac{5}{9} : 2\frac{2}{3} = \frac{32}{9} : \frac{8}{3} = \frac{32}{9} * \frac{3}{8}= \frac{4}{3} * \frac{1}{1} = \frac{4}{3} = 1\frac{1}{3}[/tex]
