Odpowiedź:
[tex] \frac{6}{7} + \frac{4}{7} = 1 \frac{3}{7} \\ 1\frac{3}{4} + \frac{2}{4} = 2 \frac{1}{4} \\ 17 \frac{3}{5} + 1 \frac{4}{5} = 19 \frac{2}{5} \\ 4 \frac{6}{8} + 2 \frac{3}{8} = 7 \frac{1}{8} \\ 1 \frac{3}{11} + 4 \frac{9}{11} = 6 \frac{1}{11} \\ 3 \frac{5}{6} + 15 \frac{4}{6} = 19 \frac{3}{6} [/tex]
