Simplify Expression 95Ccf5

1. **State the problem:** Simplify the expression $x - 2x$. 2. **Recall the rule:** When subtracting like terms, subtract their coefficients. 3. **Rewrite the expression:** $x$ can be written as $1x$, so the expression becomes $1x - 2x$. 4. **Subtract the coefficients:** $$1x - 2x = (1 - 2)x = -1x$$ 5. **Simplify:** $-1x$ is simply $-x$. **Final answer:** $-x$