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4x - 7y = -2
2x + 3y = 12
4x - 7y = -2
4x + 6y = 24
---------------- -
-13y = -26
y = 2
4x - 7y = -2
4x - 7(2) = -2
4x -14 = -2
4x = 12
x = 3
jadi, x= 3 dan y = 2