To expand or to cancel a fraction, you have to multiply / divide the numerator
as well as the denominator
of the fraction with the same number.

## Cancelling fractions

## What does it mean to cancel a fraction?

It means that you divide the numerator and the denominator of the fraction by the same number. This makes the fraction better understandable.

## Can a fraction be cancelled infinite times?

No. This is only possible as long as numerator and denominator have no common divisors. To cancel a fraction as far as possible immediately, cancel by the greatest common divisor of the numerator and the denominator.