The equation x−2x−1=1−2x−1  has

The given equation isx−2x−1=1−  2x−1     ⇒x(x−1)−2x−1=1(x−1)−2x−1 ⇒x2−2x+1=0 ⇒  x=1, but x=1  does not satisfy the given equation ,so given equation has no root.