[tex] \frac{121}{22} = \frac{11}{2} =5,5[/tex]
[tex] \frac{12}{32} = \frac{3}{8} =0,375[/tex]
[tex] \frac{72}{20} = \frac{18}{5} =3,6[/tex]
[tex](\frac{17}{3} : \frac{21}{4} ): \frac{34}{7} = \frac{17}{3} * \frac{4}{21} * \frac{7}{34} = \frac{2}{6} =0,33[/tex]
[tex]11: \frac{121}{6} =11* \frac{6}{121} = \frac{6}{11} =0,54[/tex]