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x in (-oo:+oo)
x/3.25 > 2.4 // - 2.4
x/3.25-2.4 > 0
0.30769231*x-2.4 > 0 // + 2.4
0.30769231*x > 2.4 // : 0.30769231
x > 2.4/0.30769231
x > 7.79999994
x in (7.79999994:+oo)
(7.79999994:+oo)
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