сделай 1116 номер по действиям

Решение задания 1116: a) $3 \frac{3}{7} \cdot 3 \frac{1}{2} : (1 \frac{1}{11} - \frac{27}{55})$ 1) $1 \frac{1}{11} - \frac{27}{55} = \frac{12}{11} - \frac{27}{55} = \frac{60}{55} - \frac{27}{55} = \frac{33}{55} = \frac{3}{5}$ 2) $3 \frac{3}{7} \cdot 3 \frac{1}{2} = \frac{24}{7} \cdot \frac{7}{2} = \frac{12}{1} = 12$ 3) $12 : \frac{3}{5} = 12 \cdot \frac{5}{3} = 20$ Ответ: 20. б) $(2 \frac{1}{2} : 10 + 10 : 2 \frac{1}{2} - 2 \frac{1}{6}) \cdot \frac{36}{125}$ 1) $2 \frac{1}{2} : 10 = \frac{5}{2} : 10 = \frac{5}{2} \cdot \frac{1}{10} = \frac{1}{4}$ 2) $10 : 2 \frac{1}{2} = 10 : \frac{5}{2} = 10 \cdot \frac{2}{5} = 4$ 3) $\frac{1}{4} + 4 = 4 \frac{1}{4} = \frac{17}{4}$ 4) $\frac{17}{4} - 2 \frac{1}{6} = \frac{17}{4} - \frac{13}{6} = \frac{51}{12} - \frac{26}{12} = \frac{25}{12}$ 5) $\frac{25}{12} \cdot \frac{36}{125} = \frac{1}{1} \cdot \frac{3}{5} = \frac{3}{5} = 0,6$ Ответ: 0,6. в) $3 \frac{1}{8} : ((4 \frac{5}{12} - 3 \frac{13}{24}) \cdot \frac{4}{7} + (3 \frac{1}{18} - 2 \frac{7}{12}) \cdot 1 \frac{10}{17})$ 1) $4 \frac{5}{12} - 3 \frac{13}{24} = 4 \frac{10}{24} - 3 \frac{13}{24} = 3 \frac{34}{24} - 3 \frac{13}{24} = \frac{21}{24} = \frac{7}{8}$ 2) $\frac{7}{8} \cdot \frac{4}{7} = \frac{1}{2}$ 3) $3 \frac{1}{18} - 2 \frac{7}{12} = 3 \frac{2}{36} - 2 \frac{21}{36} = 2 \frac{38}{36} - 2 \frac{21}{36} = \frac{17}{36}$ 4) $\frac{17}{36} \cdot 1 \frac{10}{17} = \frac{17}{36} \cdot \frac{27}{17} = \frac{27}{36} = \frac{3}{4}$ 5) $\frac{1}{2} + \frac{3}{4} = \frac{2}{4} + \frac{3}{4} = \frac{5}{4} = 1 \frac{1}{4}$ 6) $3 \frac{1}{8} : 1 \frac{1}{4} = \frac{25}{8} : \frac{5}{4} = \frac{25}{8} \cdot \frac{4}{5} = \frac{5}{2} = 2 \frac{1}{2}$ Ответ: 2,5.