How is subtracting rational numbers different then subtracting whole numbers?

Subtracting rational numbers involves finding a common denominator when the numbers have different denominators, which can complicate the process. In contrast, subtracting whole numbers is straightforward, as it only involves simple arithmetic without the need for common denominators. Additionally, when subtracting rational numbers, the result can also be a fraction, while subtracting whole numbers always results in a whole number unless a larger number is subtracted from a smaller one. Thus, the operations require different approaches and considerations.