Question

(5/6-2/3)•(7/8-1/2)•(-4)
(3/8-1/6)•(2/9-2/5)•27​

Answer 1

1.

$( \frac{5}{6} - \frac{2}{3} ) \times ( \frac{7}{8} - \frac{1}{2}) \times ( - 4)$

$\frac{1}{6} \times \frac{3}{8} \times ( - 4)$

$- \frac{1}{2} \times \frac{1}{2}$

$- \frac{1}{4}$

2.

$( \frac{3}{8} - \frac{1}{6} ) \times ( \frac{2}{9} - \frac{2}{5}) \times 27$

$\frac{5}{24} \times ( - \frac{8}{45} ) \times 27$

$- \frac{1}{3} \times \frac{1}{9} \times 27$

$- \frac{1}{9} \times 9$

$- 1$

Answer 2

Ответ:

Пошаговое объяснение:

$(\frac{5}{6} - \frac{2}{3}) * (\frac{7}{8} - \frac{1}{2}) * (-4) = \frac{5 - 4}{6} * \frac{7 - 4}{8} * (-4) = \frac{1}{6} * \frac{3}{8} * (-4) = \frac{1}{16} * (-4) = \frac{1}{4} * (-1) = - \frac{1}{4}$

$(\frac{3}{8} - \frac{1}{6}) * (\frac{2}{9} - \frac{2}{5} ) * 27 = \frac{9-4}{24} * \frac{10 - 18} {45} * 27 = \frac{5}{24} * (-\frac{8}{45} ) * 27 = \frac{1 }{3} * (-\frac{1}{9} ) * 27 = - \frac{1}{27} * 27 = -1$