saya mau menanyakan tentang matrix yang ada di nomor 5 bagian a dan b mohon dong yang pinter/pandai mate matika Jawab:(

2 + p = 3p - 4
p - 3p = - 4 - 2
- 2p = - 6
p = 3

2p + q = - 1
2(3) + q = - 1
6 + q = - 1
q = - 1 - 6
q = - 7

q + 2p = u
- 7 + 2(3) = u
- 7 + 6 = u
u = - 1

2p + 6r = 3q + 3
2(3) + 6r = 3(-7) + 3
6 + 6r = - 21 + 3
6r = - 18 - 6
6r = - 24
r = - 3

s + 1 = 2r - q
s + 1 = 2(-3) - (-7)
s + 1 = - 6 + 7
s = 1 - 1
s = 0

r + 7 = 6s + t
- 3 + 7 = 6(0) + t
4 = t