- \(80 - 84 : 14 = 80 - 6 = 74\);
- \(96 : 24 \cdot 9 = 4 \cdot 9 = 36\);
- \(820 - 5 \cdot 12 + 40 = 820 - 60 + 40 = 800\);
- \(54 : 18 + 42 = 3 + 42 = 45\);
- \(38 + 90 : 15 = 38 + 6 = 44\);
- \(910 : 7 \cdot 2 = 130 \cdot 2 = 260\).
Ответ: 74; 36; 800; 45; 44; 260.