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3x + 2y = 12 dikali 3
2x + 3y = 18 dikali 2 maka
9x + 6y = 36
4x + 6y = 36 dikurangi
hasilnya : 5x + 0 = 0
x = 0 per 5
x = 0.
substitusi x = 0 ke pers. 1 sehingga :
3x + 2y = 12
3(0) + 2y = 12
0 + 2y = 12
2y = 12 - 0
2y = 12
y = 12 per 2
y = 6
jadi himpunan peny. {0,6}.
Satu nomor aja yahhh, smoga bisa mmbantu...