Combine Like Terms Crossword

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Across
  1. 2. c+a+t+c+a+t+c+a+t
  2. 4. 2m+n+2m+n+n
  3. 7. x+y+x+x+y+x+x+y
  4. 8. 2a+3a+4a+5a+b+2b+3b+4b
  5. 10. 8x+y+x+y+x
  6. 11. a+b+a+1+b+1+a
  7. 13. 2a+4c+t+a+c+t
  8. 14. y+2x+y+z+2z+y+y
  9. 16. d+o+g+d+o+g+d+o+g
  10. 17. 7c+2b+b+c+d+d
Down
  1. 1. 8x+3+2+5x+y
  2. 3. 4y+2x+7y+x+3
  3. 4. b+a+b+a+b+a+b+a+b
  4. 5. 2y+2x+2x+y+4y+x
  5. 6. 4y+x+2x+y+z+z+y+x
  6. 9. b+b+3a+a+b
  7. 10. 10a+b+a+b+2+b+3
  8. 12. m+n+m+m+n+m
  9. 13. b+a+b+b+b+a+a+c+c+c
  10. 15. 3x+5+10x+2