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X in (-oo:+oo)
X-(3/8) < 1/4 // - 1/4
X-(3/8)-(1/4) < 0
X-3/8-1/4 < 0
X-5/8 < 0 // + 5/8
X < 5/8
X in (-oo:5/8)
(-oo:5/8)
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