Ответ:

  1. \(75 - 32 : 8 = 75 - 4 = 71\);
  2. \(81 : 9 \cdot 5 = 9 \cdot 5 = 45\);
  3. \(42 : 7 \cdot 3 + 22 = 6 \cdot 3 + 22 = 40\);
  4. \(64 : 8 \cdot 7 - 19 = 8 \cdot 7 - 19 = 37\);
  5. \((92 - 84) \cdot 8 = 8 \cdot 8 = 64\);
  6. \((56 + 7) : 9 = 63 : 9 = 7\).