I did it wrong and somehow got x=9, if you can help me set up the problem then I can probably solve it myself.
DFC is 27 so complimentary angle CFB is 90 -27 =63
Now CFB + 21x-9 are supplementary = 180
63 + 21x-9 = 180 Can you take it from here?
Thanks I actually ended up getting it, it was super easy haha. x=6
Good ! It WAS pretty easy......