Ответ:

  1. \(72 + 6 = 78\)
  2. \(69 + 3 = 72\)
  3. \(37 + 8 = 45\)
  4. \(45 + 9 = 54\)
  5. \(27 - 5 = 22\)
  6. \(36 - 8 = 28\)
  7. \(47 + 20 = 67\)
  8. \(32 + 40 = 72\)
  9. \(60 - 7 = 53\)
  10. \(90 - 6 = 84\)
  11. \(85 - 30 = 55\)
  12. \(83 - 60 = 23\)