Odpowiedź:
8 20/24 + 5 9/24= 13 29/24 = 14 5/24
7 10/15 - 4 6/15 = 3 4/15
[tex]a) \: 8 \frac{5}{6} + 5 \frac{3}{8} = 8 \frac{40}{48} + 5 \frac{18}{48} = 13 \frac{58}{48} = 14 \frac{10}{48} = 14 \frac{5}{24} [/tex]
[tex]b) \: 7 \frac{2}{3} - 4 \frac{2}{5} = 7 \frac{10}{15} - 4 \frac{6}{15} = 3 \frac{4}{15} [/tex]
