Math 112 All clues are with a shift of 12

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Across
  1. 3. FDUMZSXP
  2. 7. RSNAZMOOU
  3. 8. YMZPXQNDAF
  4. 9. PUYQZEUAZ
  5. 12. HAFQZS
  6. 13. WXQUZ
  7. 14. EQFE
Down
  1. 1. RDMOFMX
  2. 2. FMJUOMN
  3. 4. SAXPQZ
  4. 5. EURDBUZEWU
  5. 6. DQOFMZSXQ
  6. 10. YANFGE
  7. 11. YAP
  8. 15. EBTQD