Lcd of 5,4,2 is 20 because 5*4=20 and 2*10=20
Pairs of number with the LCD of 5 are 5 and 10, 10 and 15, 20 and 25, and many more.
Write the multiples of each: 5, 10, 15, 20 10, 20, 30, 40 10 is in each, so it is the answer.
The LCD of 5 and 4 is 20.
If that's 5/12, 10/13 and 7/9, the LCD is 468.
LCD(7, 5, 10) = 10
LCD(10, 20) = 20
LCD(5, 4, 10, 3) = 60
20
If that's 84 and 35, the LCD is 420.If that's 8/4 and 3/5, the LCD is 20.
It is 20 which is also their LCM
20