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x in (-oo:+oo)
(18-(6*x))/16-((4*x+100)/24) = 4 // - 4
(18-(6*x))/16-((4*x+100)/24)-4 = 0
(18-6*x)/16-((4*x+100)/24)-4 = 0
(18-6*x)/16+(-1*(4*x+100))/24-4 = 0
(24*(18-6*x))/(16*24)+(-1*16*(4*x+100))/(16*24)+(-4*16*24)/(16*24) = 0
24*(18-6*x)-1*16*(4*x+100)-4*16*24 = 0
-208*x-1536-1168 = 0
-208*x-2704 = 0
(-208*x-2704)/(16*24) = 0
(-208*x-2704)/(16*24) = 0 // * 16*24
-208*x-2704 = 0
-208*x-2704 = 0 // + 2704
-208*x = 2704 // : -208
x = 2704/(-208)
x = -13
x = -13
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