It is: 18 which is also their LCM
77
common denominator of eight and nine
what is a common denominator for 6, 9 and 3
36
A common denominator of 6, 8 and 10 is 480. This is NOT the least common denominator, though.
nine
9 or 27
36
There is none because the Least Common Denominator (or LCD) is the Least Common Multiple (LCM) of the denominators of two or more fractions. Even if you converted your numbers (x) to their fraction equivalents (x/1), the LCD will always be 1.
There is no exact least common denominator. Six does not go into 38
Six.
12