a) 32 39 - 2 13; б) 15 56 - 3 14; в) 4 15 - 1 60; г) 3 16 - 1 48.

а)
\( \frac{32}{39} - \frac{2}{13} = \frac{32}{39} - \frac{6}{39} = \frac{26}{39} = \frac{2}{3} \)

б)
\( \frac{15}{56} - \frac{3}{14} = \frac{15}{56} - \frac{12}{56} = \frac{3}{56} \)

в)
\( \frac{4}{15} - \frac{1}{60} = \frac{16}{60} - \frac{1}{60} = \frac{15}{60} = \frac{1}{4} \)

г)
\( \frac{3}{16} - \frac{1}{48} = \frac{9}{48} - \frac{1}{48} = \frac{8}{48} = \frac{1}{6} \)