Решите примеры: 1) 3/4 + (-8 3/5 + 6/5 * 4 1/6) : 8/25; 2) 4/3 + (-8 1/9 + 8/5 * 3 1/8) : 7/6; 3) 6/5 : 4/15 - 8 1/4 + 1 5/16 * 4/7

1) $\frac{3}{4} + (-8 \frac{3}{5} + \frac{6}{5} \cdot 4 \frac{1}{6}) : \frac{8}{25}$ 1. $\frac{6}{5} \cdot 4 \frac{1}{6} = \frac{6}{5} \cdot \frac{25}{6} = 5$ 2. $-8 \frac{3}{5} + 5 = -3 \frac{3}{5} = -\frac{18}{5}$ 3. $-\frac{18}{5} : \frac{8}{25} = -\frac{18}{5} \cdot \frac{25}{8} = -\frac{9 \cdot 5}{1 \cdot 4} = -\frac{45}{4} = -11 \frac{1}{4}$ 4. $\frac{3}{4} + (-11 \frac{1}{4}) = -10 \frac{2}{4} = -10 \frac{1}{2}$ **Ответ: -10,5** 2) $\frac{4}{3} + (-8 \frac{1}{9} + \frac{8}{5} \cdot 3 \frac{1}{8}) : \frac{7}{6}$ 1. $\frac{8}{5} \cdot 3 \frac{1}{8} = \frac{8}{5} \cdot \frac{25}{8} = 5$ 2. $-8 \frac{1}{9} + 5 = -3 \frac{1}{9} = -\frac{28}{9}$ 3. $-\frac{28}{9} : \frac{7}{6} = -\frac{28}{9} \cdot \frac{6}{7} = -\frac{4 \cdot 2}{3 \cdot 1} = -\frac{8}{3} = -2 \frac{2}{3}$ 4. $\frac{4}{3} + (-2 \frac{2}{3}) = 1 \frac{1}{3} - 2 \frac{2}{3} = -1 \frac{1}{3}$ **Ответ: -1 1/3** 3) $\frac{6}{5} : \frac{4}{15} - 8 \frac{1}{4} + 1 \frac{5}{16} \cdot \frac{4}{7}$ 1. $\frac{6}{5} : \frac{4}{15} = \frac{6}{5} \cdot \frac{15}{4} = \frac{3 \cdot 3}{1 \cdot 2} = \frac{9}{2} = 4,5$ 2. $1 \frac{5}{16} \cdot \frac{4}{7} = \frac{21}{16} \cdot \frac{4}{7} = \frac{3 \cdot 1}{4 \cdot 1} = \frac{3}{4} = 0,75$ 3. $4,5 - 8 \frac{1}{4} + 0,75 = 4,5 - 8,25 + 0,75 = -3,75 + 0,75 = -3$ **Ответ: -3**