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x in (-oo:+oo)
(5*x-1)/5+(6*x+4)/4 = 7/2 // - 7/2
(5*x-1)/5+(6*x+4)/4-(7/2) = 0
(5*x-1)/5+(6*x+4)/4-7/2 = 0
(2*4*(5*x-1))/(2*4*5)+(2*5*(6*x+4))/(2*4*5)+(-7*4*5)/(2*4*5) = 0
2*4*(5*x-1)+2*5*(6*x+4)-7*4*5 = 0
100*x-140+32 = 0
100*x-108 = 0
(100*x-108)/(2*4*5) = 0
(100*x-108)/(2*4*5) = 0 // * 2*4*5
100*x-108 = 0
100*x-108 = 0 // + 108
100*x = 108 // : 100
x = 108/100
x = 27/25
x = 27/25
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