To express 30 as a fraction in its simplest form, we need to understand that any whole number can be written as a fraction by placing it over 1. This is because dividing by 1 does not change the value of the number.
So, 30 can be written as:
30/1
This fraction is already in its simplest form because the numerator (30) and the denominator (1) have no common factors other than 1. Therefore, the simplest form of 30 as a fraction is:
30/1