6+3/x=2/(8-2x)
(6x+3)/x=2/(8-2x)
(6x+3)(8-2x)=2x
48x-12x^2+24-6x=2x
12x^2-40x-24=0
3x^2-10x-6=0
(3x-1)(x-6)=0
所以x1=1/3 x2=6