a) [tex] \frac{4}{7} = \frac{4*4}{4*7} = \frac{16}{28} [/tex]
[tex] \frac{16}{28} < \frac{23}{28} [/tex]
b) [tex] \frac{11}{3} = \frac{3*11}{3*3} = \frac{33}{9} [/tex]
[tex] \frac{2}{9} < \frac{33}{9} [/tex]
c) [tex] \frac{8}{7}= \frac{6*8}{6*7} = \frac{48}{42} [/tex]
[tex] \frac{49}{42} > \frac{48}{42} [/tex]
