tolong bantu jawab no 13 pake cara

[2 3] [4 h] [1 0]
k[-1 4] × [1 2] = [0 1]

[2k 3k] [4 h] [1 0]
[-k 4k] × [1 2] = [0 1]

8k+3k = 1...(1)
2kh+6k = 0...(2)
-4k+4k = 0...(3)
-kh+8k = 1...(4)

ambil persamaan 1
8k+3k = 1
11k = 1
k = 1/11

ambil persamaan 2
2kh+6k = 0
subtitusi k-nya
2(1/11)h+6(1/11) = 0
(2/11)h+(6/11) = 0
2h+6 = 0
2h = -6
h = -3

berarti (h/k) adalah,
h/k
-3/(1/11)
-3×(11/1)
-3×11
-33

h/k = -33 (A)