Question

пожалуйста помогите!!;​

Answer 1

$1 frac{2}{5} div (1 frac{1}{2} - frac{2}{5} ) + ( frac{3}{4} + frac{5}{6} ) div 4 frac{3}{4} =1 frac{20}{33} \ 1 frac{1}{2} - frac{2}{5} = frac{3}{2} - frac{2}{5} = frac{15 - 4}{10} = frac{11}{10} = 1.1 \ frac{3}{4} + frac{5}{6} = frac{9 + 10}{12} = frac{19}{12} = 1 frac{7}{12} \ 1 frac{2}{5} div frac{11}{10} = frac{7}{5} div frac{11}{10} = frac{7}{5} times frac{10}{11} = frac{14}{11} = 1 frac{3}{11} \ frac{19}{12} div 4 frac{3}{4} = frac{19}{12} div frac{19}{4} = frac{19}{12} times frac{4}{19} = frac{1}{3} \ frac{14}{11} + frac{1}{3} = frac{42 + 11}{33} = frac{53}{33} = 1 frac{20}{33}$