Expressions vs Equations

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Across
  1. 2. A math phrase made of numbers, variables, and operations
  2. 3. What you do to an equation to find the value of the variable
  3. 5. A letter that represents an unknown value
  4. 9. An equation that is true for all values of the variable (hint: ∞ many solutions)
  5. 11. What you do to an expression to make it simpler
  6. 13. The symbol that shows two sides have the same value
  7. 14. The process of finding the value of a variable
  8. 15. A math action such as +, −, ×, or ÷
  9. 16. The opposite of addition
  10. 17. A number or variable separated by + or −
  11. 18. The answer that makes an equation true
Down
  1. 1. The number multiplied by a variable
  2. 3. A math problem with no equals sign cannot be this
  3. 4. A math sentence that has an equals sign
  4. 6. A math phrase without an equals sign
  5. 7. A number that stays the same in an expression or equation
  6. 8. The opposite of multiplication
  7. 10. What both sides of an equation must remain
  8. 12. One complete side of an equation
  9. 13. A math sentence that can be solved