Math crossword

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Across
  1. 2. another word for answer
  2. 5. mathematival phrase that can contain numbers
  3. 6. column shows what happens to the unknown
  4. 7. constant or variable in an expression
  5. 8. another word for power
Down
  1. 1. Number in front of a variable in a term
  2. 3. opposite operation
  3. 4. solved by isolating the variable