方程左边=(12x-9)/[(2x-5)(x-1)],方程右边=4/（2x-5）+3x/（1-x）=4/（2x-5）-3x/（x-1）=[4(x-1)-3x(2x-5)]/[(2x-5)(x-1)]=(-6x^2+19x-4)/[(2x-5)(x-1)],所以12x-9=-6x^2+19x-4,6x^2-7x-5=0,(2x+1)(3x-5)=0,x=-1/2...