lcm(9, 10) = 90.
The LCD or LCM is 360
90
If that's 9/10 and 2/3, the LCD is 30.
440
but no hellop
LCD (Least Common Divisor) is not a normal term. LCM (Least Common Multiple) is, as well as GCD (Greatest Common Divisor). The LCM of 10 and 25 is 50, while the GCD of 10 and 50 is 10. I suppose if you were really looking for the LCD of 10 and 25, it is 5.
20
LCD(9, 3) = 9
LCD is 10 so: 9/10-5/10 = 4/10 = 2/5 in its lowest terms
The LCD of 20 and 9 is 180.
LCD(9, 15) = 45
LCD(9, 21) = 63