This is an inequality problem/question. I dont know if I'm right in solving this problem:

15 ≤-k/4-9
(k/4 is a fraction)
Please help!
I got 5.25 ≤k

15 ≤ -k/4 - 9

24 ≤ -k/4

96 ≤ -k ... -96 ≥ k