Question

How do you use the LCM (least common multiple) to write two or more fractions with a common denominator?

Answer 1

E.g. 1/4 and 1/3
The LCM of the denominators (4 and 3) is 12
So 1/4 can be written as 3/12
And 1/3 can be written as 4/12
You can then add the fractions if you wish to make 7/12