tlg jawab nomor 4 dan 5 matriks (klik gambarnya utk melihat nomor 4 dan 5)

4) 3 = 3c
c = 1

-b-3 = -5c
-b = -5.1 + 3
-b = -5 + 3
-b = -2
b = 2

3 + b = 3a - 1
3 + 2 = 3a - 1
3a = 5 + 1
a = 6/3 = 2

d-5 = 2a + 1
d = 2.2 + 1 +5
d = 4+6 = 10

maka a + b + c + d = 2 + 2 +1 + 10 = 25

no 5 sama dengan no 4
a = 2
b = 2
c = 1
d = 10
(coba kamu tambah hasilnya sama dengan soal no 4)