8
10 - x = 9 so x = 10 - 9 where x = 1, now we can verify 10 - 1 = 9
Added 11/18/2015 9:34:35 PM
This answer has been confirmed as correct and helpful.
8
The difference of 10 and a number is 9 is represented by:
10 - x = 9, the unknown number is 1.
-x = 9 - 10
-x = -1
x = 1
10 - 1 = 9
Added 11/20/2015 3:08:45 AM
This answer has been confirmed as correct and helpful.
