👉 The term "contraposition" is often used in logical expressions to define a statement that negates its original meaning. It involves reversing the roles of two or more variables, such as:
```
(a + b) = (a - b)
(2
c) = (c / 2)
```
In this contraposition, we switch the roles of the two operands and rephrase the statement in terms that do not involve either variable. This allows us to manipulate the original