[tex] \displaystyle\\\frac{11}{55}=\frac{1}{5}=\boxed{0,\!2}\\\\\frac{21}{77}=\frac{3}{11}=\frac{27}{99}=\boxed{0,\!(27)}\\\\\frac{16}{3}=\frac{15+1}{3}=\frac{15}{3}+\frac{1}{3}=5+\frac{3}{9}=5+0,\!(9)=\boxed{5,\!(9)}\\\\\frac{13}{6}=2+\frac{1}{6}=2+\frac{1}{6}=2+0,\!1(6) =\boxed{2,\!1(6)}\\\\\frac{17}{15}=1+\frac{2}{15}=1+0,\!1(3)=\boxed{1,\!1(3)}\\\\\frac{7}{15}=\boxed{0,\!4(6)}\\\\\frac{13}{30}=\boxed{0,\!4(3)}\\\\\frac{177}{99}=\frac{99+78}{99}=1+\frac{78}{99}=\boxed{1,\!(78)} [/tex]
[tex] \displaystyle\\
\displaystyle\\
\frac{17}{20}=\frac{85}{100}=\boxed{0,85}\\\\\frac{15}{99}=\boxed{0,\!(15)}\\\\\frac{5}{9}=\boxed{0,\!(5)} [/tex]
