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X + 3Y = 7...(1)
X - 6Y = -11...(2)
Gunakan eliminasi
Persamaan pertama X2
2X + 6Y = 14
X - 6Y = -11
____________+
3X = 3 ====> 3 + 3Y = 7 ==> 3Y = 4 ==> Y= 4/3
X = 1
B. HP = {-47/83, -764/415)
5/Y - 6/X = 9...(1)
2/Y + 7/X = -13...(2)
Gunakan eliminasi
Persamaan pertama X2
Persamaan kedua X5
10/Y - 12/X = 18
10/Y + 35/X = -65
________________-
-47/X = 83
X = -47/83 ==> 5/Y = (-423 - 282)/83 ==> 5Y = -764/83 ==> Y = -764/415