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2.
Dapat dilakukan dengan eliminasi. Misalkan eliminasi x dengan Pers 1 kalikan 2 dan Pers 2 kalikan 3
Menjadi,
6x + 4y = 2
6x + 9y = -18
- - - Kurangi - - -
-5y = 20
y = -4
Substitusikan,
3x + 2y = 1
3x + 2(-4) = 1
3x - 8 = 1
3x = 9
x = 3
Maka, HP = {(x,y)|(3,-4)}