There is none because the Least Common Denominator (or LCD) is the Least Common Multiple (LCM) of the denominators of a pair of fractions.
120.
First you need a common denominator: 3/4 and 5/8, the common denominator is 8. (4x2=8, 8x1=8) Multiply both the numerator and denominator of 3/4 by 2 so that it becomes 6/8. Now that a common denominator is established, you may subtract them with ease. 6/8 - 5/8 = 1/8.
There is none because the Least Common Denominator (or LCD) is the Least Common Multiple (LCM) of the denominators of two or more fractions. Even if you converted your numbers (x) to their fraction equivalents (x/1), the LCD will always be 1.
LCM(14, 6, 8) = 168
The least common denominator will be the least common multiple between 8 and 10, which is 40. So convert the fractions to a denominator of 40.40 = 8 x 5, so for 5/8, multiply top and bottom by 5 -> 25/4040 = 10 x 4, so for 7/10, multiply both by 4 -> 28/40.So now you have 5/8 = 25/40 and 7/10 = 28/40. You can add them and get 53/40, or 1 13/40. You can compare them and find that 25 < 28, so 5/8 < 7/10.
A common denominator, though the least, is 48.
The least common denominator for fractions with those denominators (11, 8 and 6) is 264.
The least common denominator of 6,7, and 8 is the least common multiple of those numbers. This is 168.
The least common denominator (I think you mean least common multiple) of 2, 8, and 6 is 24. 24 is perfectly divisible by 2, 8, and 6, leaving no remainder in any case.
There is none because the Least Common Denominator (or LCD) is the Least Common Multiple (LCM) of the denominators of a pair of fractions.
The common denominator for the fractions 6, 5, and 8 is the least common multiple (LCM) of these numbers. The LCM of 6, 5, and 8 is 120. Therefore, 120 is the common denominator for these numbers.
24
120
168
48
72
A common denominator of 6, 8 and 10 is 480. This is NOT the least common denominator, though.