Найдите разность: 1) 7 5/6 - 3 2/3 3) 11 11/12 - 5 7/9

Решение:

1. 1) 7 5/6 - 3 2/3
   \[ 7 \frac{5}{6} - 3 \frac{2}{3} = (7-3) + (\frac{5}{6} - \frac{2}{3}) = 4 + \frac{5-4}{6} = 4 + \frac{1}{6} = 4 \frac{1}{6} \]
2. 3) 11 11/12 - 5 7/9
   \[ 11 \frac{11}{12} - 5 \frac{7}{9} = (11-5) + (\frac{11}{12} - \frac{7}{9}) = 6 + \frac{33-28}{36} = 6 + \frac{5}{36} = 6 \frac{5}{36} \]

Ответ: 1) 4 1/6; 3) 6 5/36