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X in (-oo:+oo)
369.6 = X-((23*X)/100) // - X-((23*X)/100)
(23*X)/100-X+369.6 = 0
369.6-77/100*X = 0 // - 369.6
-77/100*X = -369.6 // : -77/100
X = -369.6/(-77/100)
X = 480
X = 480
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