Реши примеры: 1) 2 + 8/15 * 1 9/16

- 1) $2 + \frac{8}{15} \cdot 1 \frac{9}{16} = 2 + \frac{8}{15} \cdot \frac{25}{16} = 2 + \frac{1}{3} \cdot \frac{5}{2} = 2 + \frac{5}{6} = 2 \frac{5}{6}$ - 2) $2 \frac{2}{11} \cdot \frac{7}{8} - 6 \cdot \frac{1}{5} = \frac{24}{11} \cdot \frac{7}{8} - \frac{6}{5} = \frac{3}{11} \cdot \frac{7}{1} - \frac{6}{5} = \frac{21}{11} - \frac{6}{5} = \frac{21 \cdot 5 - 6 \cdot 11}{55} = \frac{105 - 66}{55} = \frac{39}{55}$ - 1) $(0,008 + 0,992) \cdot (5 \cdot 0,6 - 1,4) = 1 \cdot (3 - 1,4) = 1 \cdot 1,6 = 1,6$ - 2) $(0,93 + 0,07) : (0,93 - 0,805) = 1 : 0,125 = 1 : \frac{125}{1000} = 1 : \frac{1}{8} = 8$ **Ответ:** - 1) $2 \frac{5}{6}$ - 2) $\frac{39}{55}$ - 1) $1,6$ - 2) $8$