Combining Fractions Crossword

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Across
  1. 2. 7/5 - 4/5
  2. 4. 1/11 + 2/11
  3. 5. 3/11 + 1/11 + 4/11
  4. 7. 2/5 + 2/5
  5. 9. 5/14 + 6/14 - 2/14
  6. 11. 1/5 + 1/5
Down
  1. 1. 1/13 + 2/13 + 3/13
  2. 3. 3/18 + 4/18
  3. 6. 12/16 - 8/16
  4. 8. 13/9 - 8/9
  5. 10. 5/20 + 5/20