a)
[tex]1 - \frac{3}{5} = \frac{5}{5} - \frac{3}{5} = \frac{2}{5} [/tex]
b)
[tex]2 - \frac{7}{11} = 1 \frac{11}{11} - \frac{7}{11} = 1 \frac{4}{11} [/tex]
c)
[tex]3 - \frac{3}{4} = \frac{12}{4} - \frac{3}{4} = \frac{9}{4} = 2 \frac{1}{4} [/tex]
d)
[tex]5 \frac{3}{8} - 2 \frac{4}{8} = 4 \frac{11}{8} - 2 \frac{4}{8} = 2 \frac{7}{8} [/tex]
e)
[tex]8 \frac{6}{13} - 6 \frac{7}{13} = 7 \frac{19}{13} - 6 \frac{7}{13} = 1 \frac{12}{13} [/tex]
f)
[tex]11 \frac{9}{17} - 5 \frac{14}{17} = 10 \frac{26}{17} - 5 \frac{14}{17} = 5 \frac{12}{17} [/tex]
Myślę że pomogłem ;)