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x in (-oo:+oo)
(X-3)/3-1 = (x-8)/4 // - (x-8)/4
(X-3)/3-((x-8)/4)-1 = 0
(X-3)/3+(-1*(x-8))/4-1 = 0
(4*(X-3))/(3*4)+(-1*3*(x-8))/(3*4)+(-1*3*4)/(3*4) = 0
4*(X-3)-1*3*(x-8)-1*3*4 = 0
4*X-3*x-12+12 = 0
4*X-3*x = 0
(4*X-3*x)/(3*4) = 0
(4*X-3*x)/(3*4) = 0 // * 3*4
4*X-3*x = 0
4*X-3*x = 0 // - 4*X
-3*x = -(4*X) // : -3
x = (-(4*X))/(-3)
x = (-4*X)/(-3)
x = (-4*X)/(-3)
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