Ответ:
а)
- \(25 \cdot 4 = 100\), \(7 \cdot 6 = 42\), \(72 - 46 = 26\).
- \(42 + 18 = 60\), \(60 : 3 = 20\), \(0 \cdot 26 = 0\).
- \(100 - 20 + 0 = 80\).
Ответ: 80.
б)
- \(23 + 49 - 15 = 57\), \(56 : 8 = 7\), \(5 \cdot 1 = 5\).
- \(0 : 57 = 0\), \(7 + 5 = 12\), \(12 \cdot 3 = 36\).
- \(96 + 0 - 36 = 60\).
Ответ: 60.
