common denominator of eight and nine
A common denominator, though not the least, is 63000.
If you are refering 8 and 9 as whole numbers then the answer is 1... but if you mean that 8 and 9 are the denominators on a fraction than the common denominator is 72.
The common denominator of 5 over 8 and 4 over 9 is 72.
It is 72.
72
504
The greatest common denominator of any set of integers is infinite.
LCD(8, 11, 9) = 792
360
72
360