What value of x makes the equation true?

9(3x - 16) + 15 = 6x - 24

27x - 144 + 15 = 6x - 24

27x - 129 = 6x - 24

27x - 6x = 21x & -24 + 129

21x = 105

21x/ 5 & 105/21

x = 5