3分之x-2加2分之x-3等于x-2分之3加x-3分之2 x-2/3+x-3/2=3/x-2+2/x-3(2(x-2)+3(x-3))/6=(3(x-3)+2(x-2))/(x-2)(x-3)(5x-13)/6=(5x-13)/(x-2)(x-3)(5x-13)(x-2)(x-3)=6(5x-13)(5x-13)((x-2)(x-3)-6)=0(5x-13)(x^2-5x+...