Answer:
-10/7
Step-by-step explanation:
the reason why is because:
-5/9 divided by -7/18 can be flipped to look like this
-5/9 times -18/7 Then you get -90/63
-90/63 when you first look at it can be simplified to be -30/21
Then, simplify -30/21 by 3 to get -10/7
