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x - 5x + 3 > 5x - 5x - 1
-4x + 3 > -1
-4x + 3 - 3 > - 1 - 3
-4x > -4 (koefisiennya negatif maka tanda berubah)
-4x/-4 < -4/-4
x < -1
HP = {x|x < -1, x bil bulat} (D)