The greatest common factor is used to reduce fractions.
The greatest common factor of 6 and 9 is 3.
Just use the GCF(greatest common factor
To reduce fractions
When simplifying fractions.
The greatest common factor is a function of two numbers-- it is the greatest factor that the numbers have in common. The concept does not apply to a single number. Now you can use the same number twice and ask what is the greatest common factor of 240 and 240 and the answer would be 240.
It won't help. The lowest common factor of any two positive integers is 1.
the least common multiple is what the numbers you are using divide into. e.g. 3 and 6 have 12 as the common factor. the greatest common factor is what divides into your numbers. 6 and 9 have 3 as the greatest common factor
Use the GCF. The LCF is always 1.
When you need to reduce fractions.