A context that describes a difference of rational numbers could involve comparing quantities, such as financial transactions. For example:
"Maria has $75 in her savings account, and she spends $45 on a new jacket. To find out how much money she has left, we calculate the difference between the amounts: \(75 - 45\). This shows the difference of the rational numbers $75 (the amount she had) and $45 (the amount she spent)."
This situation illustrates how to determine the difference between two rational numbers.