There is none because the Least Common Denominator (or LCD) is the Least Common Multiple (LCM) of the denominators of two or more fractions.
The least common denominator for 12 and 16 is 48.
A common denominator, though the least, is 48.
48
144
48
The least common denominator for 12 and 16 is 48.
A common denominator, though the least, is 48.
48
1200
528
48
336
48
144
48
48
48