1,2(7) = [tex]1 \frac{27-2}{90} = \frac{115}{90} [/tex] = [tex]\frac{23}{18}[/tex]
7,(6) = [tex]7 \frac{6}{9}(simplifici)= \frac{23}{3} [/tex]
[tex] \frac{23}{18} : \frac{23}{3} : \frac{3}{2} = \frac{23}{18} * \frac{3}{23} * \frac{2}{3} = \frac{1}{6} * \frac{2}{3} ( 2 cu 6 se simplifica) = \frac{1}{9} [/tex]