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x in (-oo:+oo)
(-1/8)*x-2 > -1 // + 1
(-1/8)*x-2+1 > 0
-1/8*x-1 > 0 // + 1
-1/8*x > 1 // : -1/8
x < 1/(-1/8)
x < -8
x in (-oo:-8)
(-oo:-8)
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