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x in (-oo:+oo)
2*x-(5/7) > 3 // - 3
2*x-(5/7)-3 > 0
2*x-5/7-3 > 0
2*x-26/7 > 0 // + 26/7
2*x > 26/7 // : 2
x > 26/7/2
x > 13/7
x in (13/7:+oo)
(13/7:+oo)
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