9 + 9 + 9 + 9 + 9 + 9 + 6 + 6 + 6 + 6 + 2 + 2 + 23 + 3 + 3 + 4 + 4 + 4 = 123
9 + 4 + 4 + 4 + 4 + 4 + 5 = 34
Yes because they all add up to 18
30! 29
Commutativity.
The additive property.
119
9 + 6 + 9 + 6 + 9 + 8 + 5 + 2 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 99
9 + 4 + 7 + 8 = 28
14 + 5 + 13 + 4 + 9 = 45
6 + 9 + 7 + 4 + 65432 = 65,458
These numbers all add up to 81.