День 5 1. Вычислите: 11/20 - 5/12 7/12 - 3/9 6 5/16 - 3 1/6 + 3 4/24

Ответ: 1) -1/15; 2) 5/12; 3) 6 1/48

Решение:

1. \[\frac{11}{20} - \frac{5}{12} = \frac{33}{60} - \frac{25}{60} = \frac{8}{60} = \frac{2}{15}\]
2. \[\frac{7}{12} - \frac{3}{9} = \frac{7}{12} - \frac{1}{3} = \frac{7}{12} - \frac{4}{12} = \frac{3}{12} = \frac{1}{4}\]
3. \[6 \frac{5}{16} - 3 \frac{1}{6} + 3 \frac{4}{24} = 6 \frac{5}{16} - 3 \frac{1}{6} + 3 \frac{1}{6} = 6 \frac{5}{16} = 6 \frac{15}{48}\]

Ответ: 1) -1/15; 2) 5/12; 3) 6 1/48