(1,2:36+1,2:0,25-1 5/6):169/24

[latex]1,2 : 36 = 1 frac{1}{5}* frac{1}{36}= frac{6*1}{5*36}= frac{1}{30} \ 1,2:0,25=4,8 \ frac{1}{30}+4,8-1 frac{5}{6}= frac{1}{30}+4 frac{4}{5}-1 frac{5}{6}= frac{1}{30}+4 frac{24}{30}-1 frac{25}{30}=3 \ 3: frac{169}{24}=3* frac{24}{169}= frac{72}{169} [/latex]

[latex](1.2:36+1.2:0.25-1 frac{5}{6} ): frac{169}{24} = frac{72}{169} \ \ 1)1.2:36=1 frac{2}{10} :36=1 frac{1}{5} :36= frac{6}{5} :36= frac{6}{5*36} = frac{1}{5*6} = frac{1}{30} \ 2)1.2:0.25=1 frac{2}{10} : frac{25}{100} =1 frac{1}{5} : frac{1}{4} = frac{6}{5} : frac{1}{4} = frac{6*4}{5} = frac{24}{5} =4 frac{4}{5} \ 3) frac{1}{30} +4 frac{4}{5} = frac{1}{30} +4 frac{24}{30} =4 frac{25}{30} =4 frac{5}{6} \ 4)4 frac{5}{6} -1 frac{5}{6} =3 \ [/latex][latex]5)3: frac{169}{24} = frac{3*24}{169} = frac{72}{169} [/latex]