Question

Математика 5 класс,задание с фото.

Answer 1

Пошаговое объяснение:

$1)\frac{2}{3} \times ( \frac{5}{6} - \frac{1}{3} ) + 1 \frac{1}{3} = \frac{2}{3 } \times \frac{5 - 2}{6} + 1 \frac{1}{3} = \frac{1}{3} + 1 \frac{1}{3} = 1 \frac{2}{3} \\ 2)2 \frac{4}{5} - ( \frac{1}{2} + \frac{9}{10} ) \times \frac{5}{7} = 2 \frac{4}{5} - \frac{5 + 9}{10} \times \frac{5}{7} = 2 \frac{4}{5} - \frac{14}{10} \times \frac{5}{7} = 2 \frac{4}{5} - 1 = 1 \frac{4}{5} \\ 3)3 - ( \frac{3}{4} + \frac{5}{6} ) \times \frac{1}{2} = 3 - \frac{9 + 10}{12} \times \frac{1}{2} = 3 - \frac{19}{12} \times \frac{1}{2} = 3 - \frac{19}{24} = 2 \frac{5}{24}$