The lowest common denominator of any set of whole numbers is 1
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A common denominator, though not the least, is 1056.
The Least Common Denominator of 3/4 and 7/8 is 8.
The least common denominator of 6,7, and 8 is the least common multiple of those numbers. This is 168.
A common denominator, though the least, is 240.
To find the least common denominator, list the multiples of each denominator. The lowest one they have in common is the LCD.For example:2/3 and 3/4:The multiples of 3 are: 3, 6, 9, 12, 15, 18, 24...The multiples of 4 are: 4, 8, 12, 16, 20, 24...The common multiples are 12 and 24. Since 12 is the least, it is the LCM.