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x in (-oo:+oo)
(x-2)/3-((12-x)/2) = (5*x-36)/4-1 // - (5*x-36)/4-1
(x-2)/3-((12-x)/2)-((5*x-36)/4)+1 = 0
(x-2)/3+(-1*(12-x))/2+(-1*(5*x-36))/4+1 = 0
(2*4*(x-2))/(2*3*4)+(-1*3*4*(12-x))/(2*3*4)+(-1*2*3*(5*x-36))/(2*3*4)+(1*2*3*4)/(2*3*4) = 0
2*4*(x-2)-1*3*4*(12-x)-1*2*3*(5*x-36)+1*2*3*4 = 0
20*x-30*x-160+24+216 = 0
24-10*x+56 = 0
80-10*x = 0
(80-10*x)/(2*3*4) = 0
(80-10*x)/(2*3*4) = 0 // * 2*3*4
80-10*x = 0
80-10*x = 0 // - 80
-10*x = -80 // : -10
x = -80/(-10)
x = 8
x = 8
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