When you are adding or subtracting unlike fractions.
When adding and subtracting unlike fractions, find the LCM of the denominators and convert them to it. In this case, it's called the least common denominator, but it's the same process.
It helps with the adding and subtracting of fractions.
When you are simplifying fractions or adding and subtracting unlike fractions.
When adding or subtracting fractions with different denominators then the least common multiple amongst them is needed to find the lowest common denominator.
To help with adding and subtracting fractions.
When adding or subtracting unlike fractions, the LCM process is used to find the least common denominator.
When adding or subtracting fractions with different denominators and when reducing fractions to their lowest termsWhen adding or subtracting fractions with different denominators their lowest common multiple is needed and when reducing fractions to their lowest terms their greatest common factor is needed.
Adding and subtracting unlike fractions.
If their denominators are different then find their lowest common denominator by means of their lowest common multiple remembering to adjust their numerators accordingly before adding or subtracting.
Find a common denamonator.