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x in (-oo:+oo)
3/8 < x/16 // - x/16
3/8-(x/16) < 0
3/8-1/16*x < 0 // - 3/8
-1/16*x < -3/8 // : -1/16
x > -3/8/(-1/16)
x > 6
x in (6:+oo)
(6:+oo)
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