b)
[tex]6 \frac{7}{9} - 2 \frac{4}{9} = 4 \frac{3}{9} = 4 \frac{1}{3} [/tex]
[tex]4 \frac{3}{10} - \frac{2}{10} = 4 \frac{1}{10} [/tex]
[tex]4 \frac{5}{12} - 4 \frac{3}{12} = \frac{2}{12} = \frac{1}{6} [/tex]
c)
[tex]1 - \frac{5}{6} = \frac{1}{6} [/tex]
[tex]2 - \frac{2}{9} = 1 \frac{7}{9} [/tex]
[tex]6 - 3 \frac{12}{13} = 2 \frac{1}{13} [/tex]
d)
[tex]4 \frac{1}{7} - 2 \frac{5}{7} = 3 \frac{8}{7} - 2 \frac{5}{7} = 1 \frac{3}{7} [/tex]
[tex]5 \frac{4}{10} - 2 \frac{7}{10} = 4 \frac{14}{10} - 2 \frac{7}{10} = 2 \frac{7}{10} [/tex]
[tex]3 \frac{5}{8} - 2 \frac{7}{8} = 2 \frac{13}{8} - 2 \frac{7}{8} = \frac{6}{8} = \frac{3}{4} [/tex]
Myślę że pomogłem ;)
