[tex]9 \div \frac{3}{4} = 9 \times \frac{4}{3} = 12 [/tex]
[tex] \frac{5}{9} \div \frac{7}{3} = \frac{15}{63} = \frac{5}{21} [/tex]
[tex]7 \times 3 \times \frac{9}{7} = 27[/tex]
