The common denominator of any two or more whole numbers, such as 14 and 21, 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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LCM = 56
The Least Common Multiple (LCM) for 7 14 10 is 70.
The Greatest Common Factor of 14 and 21 is 7.
There is none because the Least Common Denominator (or LCD) is the Least Common Multiple (LCM) of the denominators of a pair of fractions.
multiply the denominators