You need at least two numbers to find something in common.
LCD(8, 100) = 200
LCD of 60 and 100 is 300.
The LCD or least common denominator of 10, 100, and 1,000 is 1,000.
LCD(25, 20, 4) = 100.
The LCD of 60 and 100 is 300.
100
100
4900
LCD(100, 1) = 100.
700
100
LCD(40, 50) = 200