Matematika (8(SPLDV))
SPLDV
Penjelasan dengan langkah-langkah:
1. x= 2 , y= 3
px + qy = 5
px - qy = 3__(+)
2px = 8
2p(2) = 8
p = 2
px + qy = 5
2(2) + q(3) = 5
4 + 3q = 5
3q = 1
q = 1/3
HP p = 2 , dan q = 1/3
2. 2x - 5y -1 = 0 dan -3y + 4x- 9 =0
eliminasi
2x - 5y =1 . . . (kali 2)
4x- 3y = 9
__
4x - 10 y = 2
4x - 3y = 9___(-)
-7y = - 7
y = 1
2x - 5y = 1
2x- 5(1) = 1
2x- 5 =1
2x= 6
x = 3
HP (x,y)= (3, 1)
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