Ответ:
Решение:
- a) \( 12 + 3\frac{3}{8} - 1\frac{5}{6} = 15\frac{3}{8} - 1\frac{5}{6} = 15\frac{9}{24} - 1\frac{20}{24} = 14\frac{33}{24} - 1\frac{20}{24} = 13\frac{13}{24} \)
- б) \( 7\frac{8}{15} + (5\frac{7}{10} - 4) = 7\frac{8}{15} + 1\frac{7}{10} = 7\frac{16}{30} + 1\frac{21}{30} = 8\frac{37}{30} = 9\frac{7}{30} \)
Ответ: a) \(13\frac{13}{24}\), б) \(9\frac{7}{30}\).
