👉 In mathematics, a rational number is a number that can be expressed as the ratio of two integers. This means that it can be written in the form a/b where a and b are integers, with no common factor other than 1. For example, 3/4 and -5/8 are both rational numbers because they can be simplified to their simplest form. Rational numbers are important in mathematics because they allow us to work with fractions, which is a fundamental concept in algebra and calculus