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x in (-oo:+oo)
(-1/4)*x-8 < 3/4 // - 3/4
(-1/4)*x-(3/4)-8 < 0
(-1/4)*x-3/4-8 < 0
-1/4*x-35/4 < 0 // + 35/4
-1/4*x < 35/4 // : -1/4
x > 35/4/(-1/4)
x > -35
x in (-35:+oo)
(-35:+oo)
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