1. \(\frac{7}{8} - \frac{9}{20} \cdot \frac{5}{6} =\)

1. \(\frac{7}{8} - \frac{9}{20} \cdot \frac{5}{6} = \frac{7}{8} - \frac{3}{4} \cdot \frac{1}{2} = \frac{7}{8} - \frac{3}{8} = \frac{4}{8} = \frac{1}{2} = 0,5\)

Ответ: 0,5