< 1 2 >
Inverse
The multiplicative inverse of a number x is 
, where also applies
Explanation
The inverse of a fraction is created by exchanging the numerator and denominator. You can write each number as a fraction, and so
with as the inverse
You can write the number 2 also as 21 and the inverse as 
but also as 2–1. These different formats are all used in mathematics.
Example 1
The denominator of a fraction can itself be a fraction
Example 2
Sometimes you will want to simplify an inverse
Example 3
You can use different formats for an inverse
.gif){kind=small}