答:
(x-1)/(x-5)=m/(10-2x)
(x-1)/(x-5)+(m/2)/(x-5)=0
(x-1+m/2)/(x-5)=0
方程无解,即x=5为方程的增根
所以:x-1+m/2=0的解为x=5
所以:5-1+m/2=0
解得:m=-8