2/(x+1)-8/(3x-1)=-1
2(3x-1)-8(x+1)=-(x+1)(3x-1)
6x-2-8x-8=-(3x^2+2x-1)
3x^2-2x+2x-10-1=0
3x^2-11=0
x^2=11/3
x=±1/3√33