(2/X²-1)-(1/X-1)的解是多少

2/(x^2-1)-1/(x-1)
=2/(x-1)(x+1)-(x+1)/(x-1)(x+1)
=2-x-1/(x-1)x+1)
=1-x/(x-1)(x+1)
=-1/(x+1) ㊣㊪题目错了，应是(2/X²-1)-(1/X-1)=1/3-1/(x+1) =1/3

即x+1=-1/3
x=-1-1/3=-4/3