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x in (-oo:+oo)
(4/9)*x-3 > 7/3 // - 7/3
(4/9)*x-(7/3)-3 > 0
(4/9)*x-7/3-3 > 0
4/9*x-16/3 > 0 // + 16/3
4/9*x > 16/3 // : 4/9
x > 16/3/4/9
x > 12
x in (12:+oo)
(12:+oo)
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