It is 20 which is also their LCM
The LCD of 5 and 4 is 20.
Lcd of 5,4,2 is 20 because 5*4=20 and 2*10=20
20
20
260
20
LCD(4, 5) = 20.
Pairs of number with the LCD of 5 are 5 and 10, 10 and 15, 20 and 25, and many more.
the LCD is 20
The LCD of 20 and 9 is 180.
LCD(12, 20) = 60
You need at least two denominators to find an LCD. If that's 4 and 5, the LCD is 20.