It is: 28
28 in this case.
28
I do not really know what the answer is exactly
1, 2, 4, 7, 14 and 28 are its factors, so it has six factors.
LCD(9, 28) = 252
28
LCD(7, 4) = 28
28
LCM of 14 12 28 is 84
28 in this case.
The least common denominator is 14. Whenever there are two values, and one is a multiple of the other, the multiple (larger number) is the LCD.
28
28
14
The LCM of 14 and 28 is 28. The LCM of 7, 14 and 28 is 28.
42
It is: 70