The common denominator of any two or more whole numbers will always be one (1) because common denominators 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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If 9, 11, and 16 are all denominators, you could multiply them together to come up with a common denominator of 1,584.
198
11 over 24 (11/24) Here's how: You need to find a common denominator. The lowest common denominator is 24, but you can use any common denominator to subtract. So convert 5/6 to 24ths: multiply numerator and denominator by 4 = 20/24, then multiply numerator and denominator of 3/8 by 3 = 9/24. Now subtract 9 from 20 = 11, which is the numerator of the difference: 11/24. This is already in simplest form.
Well, honey, let me break it down for you. To compare fractions, you need to find a common denominator. In this case, the common denominator is 21. So, 11/21 is greater than 9/17. It's as simple as that, darling.
A common denominator is 209, as is any multiple of 209.