Solve the following expressions: (7a ⋅ 4) : 2 = 14a : 7 = (7 ⋅ 6 ⋅ a) : 7/5 =

Решение:

1. \( (7a \cdot 4) : 2 = 28a : 2 = 14a \)
2. \( 14a : 7 = 2a \)
3. \( (7 \cdot 6 \cdot a) : \frac{7}{5} = 42a \cdot \frac{5}{7} = \frac{42a \cdot 5}{7} = 6a \cdot 5 = 30a \)

Ответ: 14a; 2a; 30a.