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-3 < (2x - 3) - (4x- 2) < 3
-3 < -2x - 1 < 3
-3 + 1 < -2x - 1 + 1 < 3 + 1
-2 < -2x < 4
semuanya dibagi -2, tanda berubah
1 > x > -2 --------> -2 < x < 1
sorry klo salah...