Question

виконайте дії:
-10 2/3+2 1/4
-1 2/5:(-4/25)

Answer 1

Ответ:

$1) - 8 \frac{5}{12}$

$2) - 8 \frac{3}{4}$

Пошаговое объяснение:

$1) - 10 \frac{2}{3} + 2 \frac{1}{4} = - \frac{35}{3} + \frac{9}{4} = \frac{ - 128 + 27}{12} = \frac{ - 101}{12} = - \frac{101}{12} = - 8 \frac{5}{12}$

$2) - 1 \frac{2}{5} \div ( - \frac{4}{25} ) = - \frac{7}{5} \div ( - \frac{4}{25} ) = \frac{7}{5} \times \frac{25}{4} = 7 \times \frac{5}{4} = \frac{7}{1} \times \frac{5}{4} = \frac{7 \times 5}{1 \times 4} = \frac{35}{4} = 8 \frac{3}{4}$