Algebra crossword

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Across
  1. 3. used to eliminates parentheses
  2. 4. a symbol that represent an uknow number
  3. 6. terms that have the same variable(s) raised to the same power(s)
  4. 7. an operation that reverses the effect of another
  5. 11. a value or set of values
  6. 12. the distance of a number from zero on the number line, always positive
  7. 14. two inequalitiesjoined by "and" "or"
  8. 15. a value that does not change
Down
  1. 1. a mathematical statement that compares two expresions
  2. 2. a number multiplied by a variable in an algebraic expression
  3. 5. a solution derivied from solving an equation that does not satisfy the original equation
  4. 8. a mathematical statement that two expressions are equal
  5. 9. to get the vriable alone on one side of the equation or inequality
  6. 10. an equation whose graphis a straight line
  7. 13. to reduce an expression to its simplest form