22分之9÷（11分之5-3分之1)= 17分之8÷9＋9分之1×17分之8= 简便计算

9/22÷(5/11-1/3)=
9/22÷(15/33-11/33)
=9/22÷4/33
=9/22x33/4
=9/2x3/4
=27/8
8/17÷9+1/9x8/17=
8/17x1/9+1/9x8/17
=8/17x2/9
=16/153