First, you need to set aside the whole numbers. Next, you have to find the common denominator for 5/9 and 5/6
The common denominator is 18.
It would then be 10/18- 15/18
10/18- 15/18 = -5/18
So now bring the whole numbers back 9-6= 3
So now you subtract 5/18 from 3 which equals 2 13/18