Question

x-1/x-2-x-3/x-4=x-2/x-3-x-4/x-5怎么做?

Answer 1

1+1/(x-2)+1+1/(x-4)=1+1/(x-3)+1+1/(x-5)

1/(x-2)+1/(x-4)=1/(x-3)+1/(x-5)

1/(x-2)-1/(x-5)=1/(x-3)-1/(x-4)

(2x-7)/(x-2)(x-5)=(2x-7)/(x-3)(x-4)

∴2x-7=0

x=7/2