12 and 3
10 and 5
three fives
five threes
fifteen ones
15
1 + 3 + 5 + 15 = 24
The common factors are: 1, 5
The factors of 225 are: 1, 3, 5, 9, 15, 25, 45, 75, 225. The sum of the factors is: 403
15
15
(-15) + 23 = 8
- 15. .__.
1 + 3 + 5 + 15 = 24
15 and 2
15+2
1 + 15 + 3 + 5 = 24
(15+7) +99
The sum of 15 and -52 is -37.
The common factors are: 1, 5
15
2 + 13