Решение:
1)
* \(16 \cdot 3 = 48\)
* \(49 \cdot 2 = 98\)
* \(84 \div 4 = 21\)
* \(90 \div 5 = 18\)
* \(75 \div 25 = 3\)
* \(96 \div 12 = 8\)
* \((84 - 20) \div 8 \cdot 7 = 64 \div 8 \cdot 7 = 8 \cdot 7 = 56\)
2)
\(32 + 8 \cdot 5 \div 4 = 32 + 40 \div 4 = 32 + 10 = 42\)