b) [tex]\frac{9}{8} :18=\frac{9}{8}:\frac{18}{1} =\frac{9}{8}*\frac{1}{18}=\frac{1}{8}*\frac{1}{2}=\frac{1}{16}[/tex]
c) [tex]\frac{9}{7} :12=\frac{9}{7}*\frac{1}{12} =\frac{3}{7} *\frac{1}{4} =\frac{3}{28}[/tex]
d) [tex]2\frac{2}{7} :10=\frac{16}{7} *\frac{1}{10}=\frac{8}{7} *\frac{1}{5} =\frac{8}{35}[/tex]
e) [tex]9\frac{1}{3} :4=\frac{18}{3} *\frac{1}{4} =\frac{9}{3} *\frac{1}{2} =\frac{9}{6}[/tex]
f) [tex]5 \frac{1}{5} :13 =\frac{26}{5} *\frac{1}{13}= \frac{2}{5} *\frac{1}{1} =\frac{2}{5}[/tex]
