Question

Помогите решить номер 949а по действиям! Пожалуйста!

Answer 1

$\displaystyle \tt \frac{\bigg(15-9\dfrac{1}{3}\bigg):\dfrac{2}{3}}{\bigg(19\dfrac{2}{3}-11\dfrac{7}{9}\bigg)\cdot\dfrac{9}{71}}-8,45=0,05;\\\\\\\\1). \ \ 15-9\frac{1}{3}=5\frac{2}{3}\\\\2). \ \ 5\frac{2}{3}:\frac{2}{3}=\frac{17}{3}\cdot\frac{3}{2}=\frac{17}{2}=8,5\\\\3). \ \ 19\frac{2}{3}-11\frac{7}{9}=19\frac{6}{9}-11\frac{7}{9}=7\frac{8}{9}\\\\4). \ \ 7\frac{8}{9}\cdot\frac{9}{71}=\frac{71}{9}\cdot\frac{9}{71}=1\\\\5). \ \ 8,5-8,45=0,05$