What is fraction in mathematics?

A fraction is another way to represent division.

Example of a fraction.

There is a division

1 ÷ 2

This division can be written as a fraction

1 |
---|

2 |

1 is called a numerator,

2 is called a denominator,

the line between the numerator and the denominator is called fraction bar.

Example of a fraction.

There is a division

1 ÷ (2 + a)

This division can be written as a fraction

1 |
---|

2 + a |

1 is a numerator,

(2 + a) is a denominator.

Example of a fraction.

There is a division

(-1 - a) ÷ ((2 + a)(2 - b))

This division can be written as a fraction

-1 - a |
---|

(2 + a)(2 - b) |

(-1 - a) is a numerator,

(2 + a)(2 - b) is a denominator.