Algebra Words

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Across
  1. 4. A number written by itself.
  2. 5. The _________ of x is 1.
Down
  1. 1. A group of terms added or subtracted with no equals sign.
  2. 2. 5x + 3 = 3x - 5 is an ________.
  3. 3. A symbol that represents and unknown number.
  4. 6. 3x, 7, 4bc are all ____s.