Ответ:

  1. \(9-3+2=6+2=8\);
  2. \(10-4+2=6+2=8\);
  3. \(8-4+3=4+3=7\);
  4. \(4+5-8=9-8=1\);
  5. \(7-3+2=4+2=6\);
  6. \(1+9-8=10-8=2\).