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x - 2y = 2
-y = -1
y = 1
x - 3 = 1
x = 4
x - 2y = 2
__________ -
-y = -1
y = 1
x - 2y = 2
x - 2(1) = 2
x - 2 = 2
x = 2 + 2
x = 4
jadi, x = 4 dan y = 1