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x in (-oo:+oo)
(X+5)/2 = (x-3)/4 // - (x-3)/4
(X+5)/2-((x-3)/4) = 0
(X+5)/2+(-1*(x-3))/4 = 0
(4*(X+5))/(2*4)+(-1*2*(x-3))/(2*4) = 0
4*(X+5)-1*2*(x-3) = 0
4*X-2*x+26 = 0
(4*X-2*x+26)/(2*4) = 0
(4*X-2*x+26)/(2*4) = 0 // * 2*4
4*X-2*x+26 = 0
4*X-2*x+26 = 0 // - 4*X+26
-2*x = -(4*X+26) // : -2
x = (-(4*X+26))/(-2)
x = (4*X+26)/2
x = (4*X+26)/2
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