Question

Tolong bantu kerjakan sama jalannya juga

Answer 1

20. Jawabannya: D
4p + 3q = -4
3p - 2q = 14

menjadi,
8p + 6q = -8
9p - 6q = 42
__________+
17p = 34
p = 2

8 + 3q = -4
3q = -12
q = -4

p = x = 2
q = y = -4

x - 3y = 2 -3(-4) = 2 + 12 = 14