To do this, think of a similar problem using whole numbers instead of
fractions and how you would do it.

For instance, think of this problem:

To find that answer we divide 161÷23 and get 7.
----------------------------
In your problem:

the -5/9 corresponds to the 23 and the 1/5 corresponds to the 161.

So since in the other problem we divided 161÷23, in this problem
we divide the corresponding things the same way:

 =

To divide by a fraction, we invert the fraction we are dividing by,
and change division to multiplication:

 = 

Edwin