Решение:
- \[ (25 + 20) : 5 = 45 : 5 = 9 \]
- \[ 25 : 5 + 15 = 5 + 15 = 20 \]
- \[ 20 : 5 + 1 = 4 + 1 = 5 \]
- \[ (5 + 7) : 4 = 12 : 4 = 3 \]
- \[ (9 - 5) \cdot 5 = 4 \cdot 5 = 20 \]
- \[ 3 \cdot 5 + 25 = 15 + 25 = 40 \]
- \[ 40 : 5 + 17 = 8 + 17 = 25 \]
- \[ 20 : 4 - 2 = 5 - 2 = 3 \]
Ответ: 9, 20, 5, 3, 20, 40, 25, 3