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x in (-oo:+oo)
(-1*x)/8-8 > 9 // - 9
(-1*x)/8-9-8 > 0
-x/8-9-8 > 0
-1/8*x-17 > 0 // + 17
-1/8*x > 17 // : -1/8
x < 17/(-1/8)
x < -136
x in (-oo:-136)
(-oo:-136)
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