[tex]\frac{9}{15} = \frac{3}{5}[/tex]
[tex]\frac{24}{40} = \frac{3}{5}[/tex]
[tex]\frac{2}{7} = \frac{8}{28}[/tex]
[tex]\frac{7}{9} = \frac{56}{72}[/tex]
a) [tex]7\frac{2}{9} - 4 = 3\frac{2}{9}[/tex]
b) [tex]3 - \frac{6}{7} = 2\frac{1}{7}[/tex]
c) [tex]4\frac{4}{15} - \frac{7}{15} = 3\frac{4}{5}[/tex]
d) [tex]5\frac{3}{14} - 2\frac{8}{14}= 2\frac{9}{14}[/tex]