Systems of Equations

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Across
  1. 2. A number that isn't whole
  2. 4. A problem
  3. 7. Digits
  4. 8. Finding something
  5. 10. Depending on something else
  6. 11. A subject in school
  7. 13. A set of equations; structure
  8. 14. An operation use to take away
Down
  1. 1. Something that is subject to change
  2. 2. Entertainment
  3. 3. A basic operation is school, there are multiple methods, such as Long and Short
  4. 5. Staying the same over a period of time
  5. 6. By itself, free from outside control
  6. 9. numbers accompanied by a variable
  7. 12. A basic operation we use to find the sum of 2 numbers by combining them