The lowest common denominator of any two or more whole numbers, such as 81 and 61, will always be one (1) because 'common denominator' refers to the denominators of two or more fractions or mixed numbers, not whole numbers. So, a set of whole numbers (x,x) would have to be converted to their fraction equivalents, i.e., x/1, which will always yield a denominator of 1.
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common denominator of eight and nine
8100
Since 8 is 23 and 81 is 34, the least common denominator is 23 x 34 = 648.
the number 9
4536