Вычислите: (6/5 - 3/4) * 2/3

1) $\left(\frac{6}{5} - \frac{3}{4}\right) \cdot \frac{2}{3} = \left(\frac{24}{20} - \frac{15}{20}\right) \cdot \frac{2}{3} = \frac{9}{20} \cdot \frac{2}{3} = \frac{3 \cdot 1}{10 \cdot 1} = \frac{3}{10}$ 2) $\left(\frac{5}{4} - \frac{1}{2}\right) \cdot \frac{3}{7} = \left(\frac{5}{4} - \frac{2}{4}\right) \cdot \frac{3}{7} = \frac{3}{4} \cdot \frac{3}{7} = \frac{9}{28}$ 3) $\left(\frac{7}{6} + \frac{1}{3}\right) \cdot \frac{4}{5} = \left(\frac{7}{6} + \frac{2}{6}\right) \cdot \frac{4}{5} = \frac{9}{6} \cdot \frac{4}{5} = \frac{3}{2} \cdot \frac{4}{5} = \frac{3 \cdot 2}{1 \cdot 5} = \frac{6}{5} = 1\frac{1}{5}$ 4) $\left(\frac{3}{8} - \frac{1}{4}\right) \cdot \frac{5}{6} = \left(\frac{3}{8} - \frac{2}{8}\right) \cdot \frac{5}{6} = \frac{1}{8} \cdot \frac{5}{6} = \frac{5}{48}$ 5) $\left(\frac{9}{10} + \frac{2}{5}\right) \cdot \frac{1}{2} = \left(\frac{9}{10} + \frac{4}{10}\right) \cdot \frac{1}{2} = \frac{13}{10} \cdot \frac{1}{2} = \frac{13}{20}$ 6) $\left(\frac{4}{3} - \frac{1}{6}\right) \cdot \frac{7}{8} = \left(\frac{8}{6} - \frac{1}{6}\right) \cdot \frac{7}{8} = \frac{7}{6} \cdot \frac{7}{8} = \frac{49}{48} = 1\frac{1}{48}$ 7) $\left(\frac{5}{6} + \frac{1}{2}\right) \cdot \frac{2}{9} = \left(\frac{5}{6} + \frac{3}{6}\right) \cdot \frac{2}{9} = \frac{8}{6} \cdot \frac{2}{9} = \frac{4}{3} \cdot \frac{2}{9} = \frac{8}{27}$