Basic math symbols

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Across
  1. 3. ‰
  2. 4. inequality <
  3. 6. *
  4. 9. ()
  5. 11. equal sign ≠
  6. 14. dot •
  7. 15. slash /
  8. 16. %
  9. 17. .
Down
  1. 1. []
  2. 2. sign +
  3. 4. inequality >
  4. 5. line —
  5. 7. sign x
  6. 8. equal ≈
  7. 10. sign =
  8. 12. sign ➗
  9. 13. sign -