Выполните действия: 1/10 + 6/15; 11/12 - 5/18; 2/3 * 9/8; 6/11 : 3/22; 14/5 * (3/14 - 5/28); (6/8 - 3/16) : 3/32

Вот решение заданий с дробями: 3) $\frac{1}{10} + \frac{6}{15} = \frac{1}{10} + \frac{2}{5} = \frac{1}{10} + \frac{4}{10} = \frac{5}{10} = \mathbf{\frac{1}{2}}$ (или $0,5$) 6) $\frac{11}{12} - \frac{5}{18} = \frac{11 \cdot 3}{36} - \frac{5 \cdot 2}{36} = \frac{33 - 10}{36} = \mathbf{\frac{23}{36}}$ 9) $\frac{2}{3} \cdot \frac{9}{8} = \frac{2 \cdot 9}{3 \cdot 8} = \frac{1 \cdot 3}{1 \cdot 4} = \mathbf{\frac{3}{4}}$ (или $0,75$) 12) $\frac{6}{11} : \frac{3}{22} = \frac{6}{11} \cdot \frac{22}{3} = \frac{6 \cdot 22}{11 \cdot 3} = 2 \cdot 2 = \mathbf{4}$ 15) $\frac{14}{5} \cdot (\frac{3}{14} - \frac{5}{28}) = \frac{14}{5} \cdot (\frac{6}{28} - \frac{5}{28}) = \frac{14}{5} \cdot \frac{1}{28} = \frac{14 \cdot 1}{5 \cdot 28} = \frac{1 \cdot 1}{5 \cdot 2} = \mathbf{\frac{1}{10}}$ (или $0,1$) 18) (\frac{6}{8} - \frac{3}{16}) : \frac{3}{32} = (\frac{12}{16} - \frac{3}{16}) : \frac{3}{32} = \frac{9}{16} \cdot \frac{32}{3} = \frac{9 \cdot 32}{16 \cdot 3} = 3 \cdot 2 = \mathbf{6}$