21 and 45 are both divisible by 3. 21/3 = 7 and 45/3 = 15. So the number can be simplified to 7/15
what goes into both 21 and 25
21 times.
The smallest number that both 21 and 23 can go into is 483.
180
3
45
18 can be divided by 3 18 can be divided by 9 45 can be divided by 9 45 can be divided by 3
LCM of 21 and 45=315 Factors of 21= 3x7 Factors of 45=3x3x5 Lcm= 3x5x7x3=315
Factors of 21: 1, 3, 7, 21 Factors of 45: 1, 3, 5, 9, 15, 45
63/7 * 21 = 45/7 * 21 = 45*3 = 135
1 and 7 both can.
21 is one example
i would go with 12-21-2012
6 and 9 The answer is 15 will work for both of them;
21 + 39 + 45 + 25 = 130
it is 21