Linear eqns in one variable

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Across
  1. 2. grndu
  2. 3. gaunt
  3. 11. hen
  4. 14. hf
  5. 15. numbers with a fixed value
Down
  1. 1. heh
  2. 4. addition and subtraction of terms
  3. 5. Ben
  4. 6. property hush
  5. 7. dud
  6. 8. multiplication and addition of constants and variables
  7. 9. Jen
  8. 10. special type of algaebric expressions that can have any term having constants ,variables and exponents but the exponents should be whole number
  9. 12. hhdh
  10. 13. letters with an unknown value