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x in (-oo:+oo)
2*x-(5/(-4)) > 5/4 // - 5/4
2*x-(5/(-4))-(5/4) > 0
2*x+5/4-5/4 > 0
2*x+0 > 0 // - 0
2*x > 0 // : 2
x > 0/2
x > 0
x in (0:+oo)
(0:+oo)
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