11 7 21 6) —— : —— ⋅ —— 12 24 22

Ответ: 11/4

Разбираемся:

\[\frac{11}{12} : \frac{7}{24} \cdot \frac{21}{22} = \frac{11}{12} \cdot \frac{24}{7} \cdot \frac{21}{22} = \frac{11 \cdot 24 \cdot 21}{12 \cdot 7 \cdot 22} = \frac{11 \cdot 2 \cdot 12 \cdot 3 \cdot 7}{12 \cdot 7 \cdot 2 \cdot 11} = \frac{3}{1} = 3\]

Ответ: 3