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X in (-oo:+oo)
X/4-5 < 10 // - 10
X/4-10-5 < 0
1/4*X-15 < 0 // + 15
1/4*X < 15 // : 1/4
X < 15/1/4
X < 60
X in (-oo:60)
(-oo:60)
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