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y(x+1) = 0
x-2y = 3
x = 2y+3
Substitusikan
y(2y+3+1) =0
y(2y+4)=0
y = 0 dan y = -2
Untuk y = 0
x-2y = 3
x = 3
Untuk y = -2
x+4 = 3
x = -1
Maka, solusinya adalah
HP={(x,y)|(3,0)(-1,-2)}