Ответ:

  1. \(9 + 2 - 6 = 11 - 6 = 5\).
  2. \(9 + 3 - 6 = 12 - 6 = 6\).
  3. \(16 - 6 + 1 = 10 + 1 = 11\).
  4. \(16 - 7 + 1 = 9 + 1 = 10\).
  5. \(8 + 6 = 14\).
  6. \(80 + 6 = 86\).
  7. \(9 + 8 = 17\).
  8. \(90 + 8 = 98\).