Question

-3/(-15/16):16/17:(-17/18):(-18/19):(-19/20)...ПЖ По действиям.

Даю 20 б.

Answer 1

$- 3 \div ( - \frac{15}{16} ) = - 3 \times ( - \frac{16}{15} ) = \\ \frac{16}{5}$
$\frac{16}{5} \div \frac{16}{17} = \frac{16}{5} \times \frac{17}{16} = \frac{17}{5}$
$\frac{17}{5} \div ( - \frac{17}{18} ) = \frac{17}{5} \times ( - \frac{18}{17} ) = \\ - \frac{18}{5}$
$- \frac{18}{5} \times ( - \frac{19}{18} ) = \frac{19}{5} \\ \frac{19}{5} \times ( - \frac{20}{19} ) = - 4$
Ответ:-4