Where is Ms. Huynh?

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Across
  1. 1. p-6=-5
  2. 3. 15+b=23
  3. 5. 26=8+v
  4. 7. v+9/3=8
  5. 9. 10n=40
  6. 11. x-7=13
  7. 12. a+11=20
  8. 13. v/8=2
Down
  1. 2. 10-6v=-104
  2. 4. -15x=0
  3. 6. -143=-11x
  4. 8. -9x-13=-103
  5. 10. 3+p=8