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x in (-oo:+oo)
4-((9/8)*x) > 8 // - 8
4-((9/8)*x)-8 > 0
(-9/8)*x-8+4 > 0
-9/8*x-4 > 0 // + 4
-9/8*x > 4 // : -9/8
x < 4/(-9/8)
x < -32/9
x in (-oo:-32/9)
(-oo:-32/9)
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