Addition subtraction

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Across
  1. 2. 5-1
  2. 3. 16-5
  3. 7. 9-1
  4. 9. 11-6
  5. 10. 2-1
Down
  1. 1. 3-0
  2. 4. 21-3
  3. 5. 14-2
  4. 6. 10-4
  5. 8. 8-6