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Across
  1. 4. 19+17=36
  2. 6. 27+15-2
  3. 7. 15+12
  4. 9. 35+42-17
  5. 10. 50+57-15
  6. 11. 57+51
  7. 12. 55+49+13
Down
  1. 1. 123-42
  2. 2. 100-47
  3. 3. 100-55
  4. 5. 35+48-4
  5. 8. 40+37-3