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x in (-oo:+oo)
3*x-(3/9) > 1 // - 1
3*x-(3/9)-1 > 0
3*x-1/3-1 > 0
3*x-4/3 > 0 // + 4/3
3*x > 4/3 // : 3
x > 4/3/3
x > 4/9
x in (4/9:+oo)
(4/9:+oo)
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