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Verified answer
D.p=-5dan q=-3semoga membantu
2p+q=7.........(3)
Persamaan kedua semua dikali 12 (KPK Penyebut)
3p+4q=3
Eliminasi dengan pers (3) dikali 4
8p+4q=28
3p+4q=3
_______-
5p=25
p=25/5=5
substitusikan ke pres (3)
2(5)+q=7
10+q=7
q=7-10
q=-3