Question:

# Can you Explain how you know 21/30 is greater than 2/3?

## To compare fractions that have different denominators we must convert them all to a set of fractions that have the same denominator. The lowest common denominator is 30. So, the equations would be 21/30 and 20/30. Therefore 21/30 is greater than 20/30.

### Semantic Tags:

lowest common denominator Elementary arithmetic Number theory Egyptian fraction Continued fraction Mathematics Arithmetic Numbers Fractions Division Education

10