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X in (-oo:+oo)
X/250-437 = 1.86 // - 1.86
X/250-437-1.86 = 0
1/250*X-438.86 = 0 // + 438.86
1/250*X = 438.86 // : 1/250
X = 438.86/1/250
X = 109715
X = 109715
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