Algebra (if answer is 2 words, type without space)

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Across
  1. 4. a group of terms separated be + or - signs
  2. 5. A value or number that never changes in an equation
  3. 6. To find the answer
  4. 7. a symbol (such as + or ×) that shows an operation
Down
  1. 1. A small number written slightly above and to the right of a variable or number; it’s used to show repeated multiplication
  2. 2. A letter that always represents an unknown number
  3. 3. terms whose variables (and their exponents) are the same
  4. 4. Says that two things are equal