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x in (-oo:+oo)
(3*x+1)/3-((13*x)/2) = (1-x)/4 // - (1-x)/4
(3*x+1)/3-((1-x)/4)-((13*x)/2) = 0
(3*x+1)/3-((1-x)/4)+(-13/2)*x = 0
(3*x+1)/3+(-1*(1-x))/4+(-13*x)/2 = 0
(2*4*(3*x+1))/(2*3*4)+(-1*2*3*(1-x))/(2*3*4)+(-13*3*4*x)/(2*3*4) = 0
2*4*(3*x+1)-1*2*3*(1-x)-13*3*4*x = 0
30*x-156*x+2 = 0
2-126*x = 0
(2-126*x)/(2*3*4) = 0
(2-126*x)/(2*3*4) = 0 // * 2*3*4
2-126*x = 0
2-126*x = 0 // - 2
-126*x = -2 // : -126
x = -2/(-126)
x = 1/63
x = 1/63
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