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D( x )
225.008-(5.74*x) = 0
225.008-(5.74*x) = 0
225.008-(5.74*x) = 0
225.008-5.74*x = 0
225.008-5.74*x = 0 // - 225.008
-5.74*x = -225.008 // : -5.74
x = -225.008/(-5.74)
x = 39.2
x in (-oo:39.2) U (39.2:+oo)
0.6808 = (225.008-(39.2*x))/(225.008-(5.74*x)) // - (225.008-(39.2*x))/(225.008-(5.74*x))
0.6808-((225.008-(39.2*x))/(225.008-(5.74*x))) = 0
0.6808-((225.008-39.2*x)/(225.008-5.74*x)) = 0
(-1*(225.008-39.2*x))/(225.008-5.74*x)+0.6808 = 0
(-1*(225.008-39.2*x))/(225.008-5.74*x)+(0.6808*(225.008-5.74*x))/(225.008-5.74*x) = 0
0.6808*(225.008-5.74*x)-1*(225.008-39.2*x) = 0
35.292208*x-71.8225536 = 0
(35.292208*x-71.8225536)/(225.008-5.74*x) = 0
(35.292208*x-71.8225536)/(225.008-5.74*x) = 0 // * 225.008-5.74*x
35.292208*x-71.8225536 = 0
35.292208*x-71.8225536 = 0 // + 71.8225536
35.292208*x = 71.8225536 // : 35.292208
x = 71.8225536/35.292208
x = 2.03508246
x = 2.03508246
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