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X in (-oo:+oo)
X = 5/2-23-12-5-4+3+4+5+10+15+16 // - 5/2-23-12-5-4+3+4+5+10+15+16
X-(5/2)-16-15-10-5-4-3+4+5+12+23 = 0
X-5/2-16-15-10-5-4-3+4+5+12+23 = 0
X-23/2 = 0 // + 23/2
X = 23/2
X = 23/2
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