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X in (-oo:+oo)
X/(-8) > 3 // - 3
X/(-8)-3 > 0
-1/8*X-3 > 0 // + 3
-1/8*X > 3 // : -1/8
X < 3/(-1/8)
X < -24
X in (-oo:-24)
(-oo:-24)
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