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x in (-oo:+oo)
(1/3)*(x-9) < (1/8)*(3*x-1) // - (1/8)*(3*x-1)
(1/3)*(x-9)-((1/8)*(3*x-1)) < 0
(1/3)*(x-9)+(-1/8)*(3*x-1) < 0
1/3*(x-9)-1/8*(3*x-1) < 0
1/3*(x-9)-1/8*(3*x-1) < 0
-1/24*x-23/8 < 0
-1/24*x-23/8 < 0
-1/24*x-23/8 < 0 // + 23/8
-1/24*x < 23/8 // : -1/24
x > 23/8/(-1/24)
x > -69
(-oo:-69) (-69:+oo) -1/24*x-23/8 + -
x in (-69:+oo)
(-69:+oo)
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