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b. P = (-2) & Q = (6)
maaf kalau salah
Pers. I 4x + 2y = 12 x1 = 4x + 2y = 12
Pers. II 2x + y = 2 x2 = 4x + 2y = 4 _
= = 8
Subtitusi pers. 2
2x + y = 2
2(8) + y = 2
16 + y = 2
y = 2-16
y = -14
Subtitusi pers. 1
4x + 2y = 12
4(8) + 2y = 12
32 + 2y = 12
2y = 12 - 32
y = -20/2
y = -10
b. Eliminasi p
Pers. I 2p + 3q = 12 x2 = 4p + 6q = 24
Pers. II 4p -7q = -2 x1 = 4p - 7q = -2 _
= 13q = 26
= q = 26/13
= q = 2
Subtitusi pers. 2
Pers. 2 4p - 7q = - 2
4p - 7(2)= - 2
4p - 14 = - 2
4p = - 2 + 14
p = 12
4
p = 3
Pers. I 4x + 2y = 12 x1 = 4x + 2y = 12
Pers. II 2x + y = 2 x2 = 4x + 2y = 4 _
= = 8
Subtitusi pers. 2
2x + y = 2
2(8) + y = 2
16 + y = 2
y = 2-16
y = -14
Subtitusi pers. 1
4x + 2y = 12
4(8) + 2y = 12
32 + 2y = 12
2y = 12 - 32
y = -20/2
y = -10
b. Eliminasi p
Pers. I 2p + 3q = 12 x2 = 4p + 6q = 24
Pers. II 4p -7q = -2 x1 = 4p - 7q = -2 _
= 13q = 26
= q = 26/13
= q = 2
Subtitusi pers. 2
Pers. 2 4p - 7q = - 2
4p - 7(2)= - 2
4p - 14 = - 2
4p = - 2 + 14
p = 12
4
p = 3