PLZ HELP ASAP!!!!!

from 5th term to 32 term is  27 d

  9 + 27 d  = -84

               d = -3.1111111        or   (- 93/27)

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From 5th term to 23rd is 18 d

9 + 18 (-93/27) = - 53

F = First term

D = Common difference

9 = F + 4D, 

-84 =F +31D, solve for F, D

F =205 / 9

D = - 31 / 9

23rd term =205/9 + (-31/9) * (23-1)

                  =205/9  -(31/9) *22

                  =205/9 - 682/9

                  = - 477 / 9

                  = - 53