1.
a)
[tex] \frac{7}{9} - \frac{3}{4} = \frac{28}{36} - \frac{27}{36} = \frac{1}{36} [/tex]
b)
[tex]2 \frac{3}{4} - 1 \frac{5}{8} = 2 \frac{6}{8} - 1 \frac{5}{8} = 1 \frac{1}{8} [/tex]
2.
a)
[tex]7 - \frac{5}{9} = 6 \frac{4}{9} [/tex]
b)
[tex]3 \frac{1}{7} - 1 \frac{3}{4} = 3 \frac{4}{28} - 1 \frac{21}{28} = 2 \frac{32}{28} - 1 \frac{21}{28} = 1 \frac{11}{28} [/tex]
c)
[tex]3 \frac{5}{12} - 2 \frac{2}{9} = 3 \frac{15}{36} - 2 \frac{8}{36} = 1 \frac{7}{36} [/tex]
