a)
[tex]1 \frac{3}{5} - \frac{1}{5} = 1+ ( \frac{3}{5} - \frac{1}{5} ) = 1 + \frac{2}{5} = 1 \frac{2}{5} [/tex]
b)
[tex]3 \frac{7}{8} - \frac{5}{8} = 3 + ( \frac{7}{8} - \frac{5}{8}) = 3 + \frac{2}{8} = 3 \frac{2}{8} [/tex]
c)
[tex]5 \frac{12}{13} - \frac{5}{13} = 5 + ( \frac{12}{13} - \frac{5}{13} ) = 5 + \frac{7}{13} = 5 \frac{7}{13} [/tex]
d)
[tex]18 \frac{18}{31} - \frac{2}{31} = 18 + ( \frac{18}{31} - \frac{2}{31} ) = 18 + \frac{16}{31} = 18 \frac{16}{31} [/tex]
Myślę że pomogłem ;)
