1+2x−9+1+2x−5=1+2x−6+1+2x−8，1x−9+1x−5=1x−6+1x−81x−8-1x−9=1x−5-1x−61(x−8)(x−9)=1(x−5)(x−6)（x-8）（x-9）=（x-5）（x-6）x2-17x+72=x2-11x+306x=42x=7，经检验：x=7是原分式方程的解．...