Решение:
- \( 18 : 3 \cdot 2 = 6 \cdot 2 = 12 \)
- \( 2 \cdot 9 : 6 = 18 : 6 = 3 \)
- \( 21 : 7 \cdot 4 = 3 \cdot 4 = 12 \)
- \( 4 \cdot 3 : 2 = 12 : 2 = 6 \)
- \( 2 \cdot 3 \cdot 3 = 6 \cdot 3 = 18 \)
- \( 3 \cdot 3 \cdot 3 = 9 \cdot 3 = 27 \)
- \( 16 : 2 \cdot 3 = 8 \cdot 3 = 24 \)
- \( 2 \cdot 4 \cdot 3 = 8 \cdot 3 = 24 \)
- \( 24 : 8 \cdot 5 = 3 \cdot 5 = 15 \)
Ответ: 12; 3; 12; 6; 18; 27; 24; 24; 15.