What you must do for this case is to rewrite the expression in a simplified way.
We have then:
3/a-9b
We take common factor 3:
(3)*(1/a-3b)
Answer:
The simplified form of the expression is:
(3)*(1/a-3b)
There is no polygon there
(0,3)
Please see the photo I added, if you do not understand, specify in the comments