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x in (-oo:+oo)
8-((2/9)*x) > 9 // - 9
8-((2/9)*x)-9 > 0
(-2/9)*x-9+8 > 0
-2/9*x-1 > 0 // + 1
-2/9*x > 1 // : -2/9
x < 1/(-2/9)
x < -9/2
x in (-oo:-9/2)
(-oo:-9/2)
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