6/2x-1-4/2-4x=3
两边乘以2(2x-1)得
12+4=6(2x-1)
16=12x-6
x=11/6
2、原式=(x-1-1)/(x-1) ×(x+1)(x-1)/(x-2)²
=(x-2)/(x-1) ×(x+1)(x-1)/(x-2)²
=(x+1)/(x-2)