3, 15 and 20
The least common multiple (LCM) refers to a multiple that is COMMON to two or more numbers. You have only one number in the question! The least multiple of a number is itself.
Pick two of the fractions and find the Least Common Multiple of those two denominators. Then take that number, and find the Least Common Multiple between that and the third denominator. This number will be the Least Common Denominator between the three fractions.If you don't care to find the Least common denominator, then just take the three denominators, and multiply them together.
It can't be a factor, common or otherwise, because factors can't be larger than the numbers they supposedly come from. 3360 is a multiple of 16 and 30, but it can't be a common multiple in this problem because it is not a multiple of 36.
The Least Common Multiple (LCM) of (54,63) is 378.
"Common multiples" is usually used for two or more numbers, not for a single number. The least common multiple of a single number is, of course, the number itself. To get additional multiples, multiply this least common multiple by 2, by 3, by 4, etc.
Twelve, because it is the lowest number that all three will divide evenly into.
The definition of least common multiple is the lowest number that is the product of all of the numbers in a set when multiplied by an integer. In this case, the least common multiple is 28; this is because 7*4= 28, 4*7=28, and 14*2=28. There is not a lower number into which these three numbers can all be evenly multiplied into.
15
12
12
33
It is: 6