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5x - 2y = 1
---------------- + (untuk mengeliminasi 2y )
6x = 4
x = 4/6 = 2/3
maka y
x - 2y = 3
2/3 - 2y = 3
-2y = 3 - 2/3
-2y = 9/3 -2/3
-2y = 7/3
y = 7/3 dibagi 2
y = -7/6