Question

(5/6-2/3)×(7/8-1/2)×(-4) ; (3/8-1/6)×(2/9-2/5)×27 вычислите по действиям

Answer 1

Ответ:

456789 10 12 14 15 16 17 18 19 20

Answer 2

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

$1)\frac{5}{6} - \frac{2}{3} = \frac{5-4}{6} =\frac{1}{6}$

$2)\frac{7}{8} - \frac{1}{2} = \frac{7-4}{8} =\frac{3}{8}$

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

$\frac{3}{48}*(-4)$ =

$\frac{1}{16}*(-4)$ =

$-\frac{4}{16}$ =

$-\frac{1}{4}$ =

$-0.25$