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mau di eliminasi.??
p + q = 5 dikali 2
2p + 3q = 18 dikali 1
2p + 2q = 10
2p + 3q = 18
dikurangi
-q = -8
q = 8
di subtitusikan
p + q = 5
p + 8 = 5
p =5 - 8
p =- 3
jadi hasil dari (p,q) = ( -3, 8)
p+q-5 = 0 (P1)
2p + 3q-18=0 (P2)
p+q= 5 (P1)
2p+3q = 18 (P2)
(P1x2) 2p+2q=10 (P1')
kurangkan (P2) dengan (P1')
q = 8
sub. q=8 ke (P1)
p+8 = 5
p=-3