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x in (-oo:+oo)
2*x > 7/4 // - 7/4
2*x-(7/4) > 0
2*x-7/4 > 0
2*x-7/4 > 0 // + 7/4
2*x > 7/4 // : 2
x > 7/4/2
x > 7/8
x in (7/8:+oo)
(7/8:+oo)
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