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D( x )
x+18+76 = 0
x+18+76 = 0
x+18+76 = 0
x+94 = 0 // - 94
x = -94
x in (-oo:-94) U (-94:+oo)
(x+18)/(x+18+76) = 0.3153 // - 0.3153
(x+18)/(x+18+76)-0.3153 = 0
(x+18)/(x+94)-0.3153 = 0
(x+18)/(x+94)+(-0.3153*(x+94))/(x+94) = 0
x-0.3153*(x+94)+18 = 0
0.6847*x-11.6382 = 0
(0.6847*x-11.6382)/(x+94) = 0
(0.6847*x-11.6382)/(x+94) = 0 // * x+94
0.6847*x-11.6382 = 0
0.6847*x-11.6382 = 0 // + 11.6382
0.6847*x = 11.6382 // : 0.6847
x = 11.6382/0.6847
x = 16.99751716
x = 16.99751716
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