One number is the **reciprocal **of another if their product is 1.

The reciprocal of

is

since

The reciprocal of a fraction is obtained by interchanging the numerator and the denominator, i.e. by inverting the fraction.

Find the reciprocal of

Solution:

The reciprocal of is

Find the reciprocal of 20

Solution:

The reciprocal of 20 is

Find the reciprocal of