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n=-2p/3
masukkan ke persamaan kedua
6(-2p/3)-p-5=0
-5p-5=0
P=-1
lalu substitusi
3n+2p=0
3n-2=0
n=2/3
6n-p-5=0 ⇒6n-5=p
jadi,
3n+2(6n-5)=0
3n+12n-10=0
15n-10=0
15n=10
n=10/15
n=2/3
3n+2p=0 ⇒3(2/3)+2p=0
2+2p=0
2p=-2
p=-2/2
p=-1