Fractions

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Across
  1. 3. 10/3-9/3
  2. 5. 2/8-0/8
  3. 6. 10/10-1/10
  4. 7. 9/3-3/3
Down
  1. 1. 6/8+2/8
  2. 2. 2/9+2/9
  3. 4. 6/9+2/9
  4. 5. 80/2-79/2