Odpowiedź:
[tex]3 \frac{3}{5} + 1 \frac{2}{3} = 3 \frac{9}{15} + 1 \frac{10}{15} = 4 \frac{19}{15} = 5 \frac{4}{15} [/tex]
[tex]2 \frac{1}{3} + 1 \frac{3}{5} + 3 \frac{5}{6} = 2 \frac{10}{30} + 1 \frac{18}{30} + 3 \frac{25}{30} = 6 \frac{53}{30} = 7 \frac{23}{30} [/tex]
