What is the Least Common Multiple (LCM)?
The Least Common Multiple (LCM) of two or more numbers is the smallest number that is a multiple of all the given numbers.
For example:
The LCM of 4 and 6 is 12 because 12 is the smallest number that both 4 and 6 divide into evenly.
How is the LCM used with fractions?
The LCM is especially useful when working with fractions that have different denominators. Here's how:
1. Adding or Subtracting Fractions
You need a common denominator to add or subtract fractions.
The best common denominator is the LCM of the denominators, because it makes the calculation easier and often avoids extra simplification later.
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