Question

срочно нужен ответ!
15 баллов​

Answer 1

Ответ:

$- x = - 8 \frac{9}{10} + 4 \frac{5}{6} = - 8 \frac{27}{30} + 4 \frac{25}{30} = - 4 \frac{2}{30} = - 4 \frac{1}{15}$

$x = 4 \frac{1}{15}$

$x + \frac{9}{14} - \frac{6}{14} = \frac{23}{28}$

$x = \frac{23}{28} - \frac{6}{28} = \frac{17}{28}$

$\frac{3.2 \times 8.4 - 13.76}{0. 8 - 0.16} = \frac{31.92 - 13.76}{0.64} = \frac{18.16}{0.64} = 28.375$