Crossword Puzzle #7

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Across
  1. 1. are positive numbers, negative numbers and zero
  2. 4. symbol which can represent a unknown number
  3. 5. are terms that contain the same letter variables and are raised to the same power
  4. 8. a mathematical sentence that has two equal sides separated by an equal sign
  5. 9. to divide something or give a share or part of something
  6. 11. number part of a term that contains a variable
  7. 12. a linear equation has one solution if only one value of the variable makes the equation true
Down
  1. 2. a linear equation has no solution if no value of the variable makes both sides of the equation equal
  2. 3. the operation that reverses the effect of another operation
  3. 6. number on its own or a term that only contains a number
  4. 7. a number, or the result of a calculation
  5. 10. a linear equation has infinitely many solutions if any value of the variable makes both sides of the equations equal