X_1/x_2 +x_3/x_4=10/3
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x-1/x-2 + x-3 /x-4 =10/3
[(x-1)(x-4) + (x-2)(x-3)]/ (x-2)(x-4)= 10/3
(x^2–5x+ 4)+ (x^2 -5x +6) = 10/3 * (x^2 -6x +8)
3[ 2 x^2 -10 x +10]= 10 [ x^2 -6x +8]
6 x^2 -30x +30 = 10 x^2 -60 x+ 80
10 x^2 - 6 x^2 -60 x +30x +80 -30 =0
4 x^2 -30 x + 50 = 0
x = 5, 2.5
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