tolong dijawab no 28&29 dengan penyelesaian yang benar

Bab Pertidaksamaan
Matematika SMA Kelas X

28] (13x + 26)/(6 - x) ≤ 0
13 (x + 2) / (6 - x) ≤ 0
x + 2 = 0
x = -2

6 - x = 0
6 = x
x = 6

x ≤ -2 atau x ≥ 6

jawabannya B

29] 3/(x + 2) > 6/(x - 1)
3/(x + 2) - 6/(x - 1) > 0
(3 (x - 1) - 6 (x + 2))/((x - 1) (x + 2)) > 0
(3x - 3 - 6x - 12)/((x - 1) (x + 2)) > 0
(-3x - 15) / ((x - 1) (x + 2)) > 0
-3 (x + 5) / ((x - 1) (x + 2)) > 0

x + 5 = 0
x = -5

x - 1 = 0
x = 1

x + 2 = 0
x = -2

x < -5 atau -2 < x < 1

jawabannya A