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k in (-oo:+oo)
10*k-(3/(-5)) > 3 // - 3
10*k-(3/(-5))-3 > 0
10*k+3/5-3 > 0
10*k-12/5 > 0 // + 12/5
10*k > 12/5 // : 10
k > 12/5/10
k > 6/25
k in (6/25:+oo)
(6/25:+oo)
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