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Systems of a Down or Across

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Across
  1. 2. infinite
  2. 4. parenthesis, square roots,
  3. 5. product of
  4. 8. power or square
  5. 9. eliminates parenthesis
  6. 14. sometimes true
  7. 16. value for a variable that makes it true
  8. 17. to make smaller fractions
  9. 18. addition changes
  10. 20. switch to isolate
Down
  1. 1. quotient
  2. 3. sum
  3. 6. no solution
  4. 7. any combination of numbers
  5. 10. difference
  6. 11. two expressions set equal to each other
  7. 12. comparison
  8. 13. order of operatinons
  9. 15. changes grouping without the result changing
  10. 19. operations undo each other