Odpowiedź:
[tex]a)\ \ 3\frac{3}{8}+11\frac{4}{9}=3\frac{27}{72}+11\frac{32}{72}=14\frac{59}{72}\\\\b)\ \ 7\frac{7}{15}-3\frac{3}{5}=7\frac{7}{15}-3\frac{9}{15}=6\frac{22}{15}-3\frac{9}{15}=3\frac{13}{15}\\\\c)\ \ 6-2\frac{5}{11}=5\frac{11}{11}-2\frac{5}{11}=3\frac{6}{11}[/tex]
