Chapter 1 - Introduction to Algebraic Expressions - Review Exercises: Chapter 1 - Page 75: 9

This statement is $\color{red}{\text{FALSE}}$.

Since $x$ is a variable, it can represent any real number. If we represent $x$ as a negative number such as $-2$, the opposite of $-2$ becomes $-(-2) = 2$ which is a positive number. Therefore, this statement is $\color{red}{\text{FALSE}}$.