Question

пожалуйста помогите!!;​

Answer 1

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