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x = 2y+10
[2] 3x+2y+2=0
[1] dimasukkan ke [2]
3x+2y+2=0
3(2y+10)+2y+2=0
6y+30+2y+2=0
8y+32 = 0
8y =-32
y =-4...........[3]
[3] dimasukkan ke [1]
x=2y+10
=-8+10
=2
Jadi, HP = {(2,-4)}
Insyaallah bener. gomen kalu nggak rapi ^^