To solve the inequality \( 4.6x < -15.64 \), follow these steps:
- Divide both sides by 4.6: Since 4.6 is positive, the direction of the inequality does not change.
\[ x < \frac{-15.64}{4.6} \]
- Calculate the right side:
\[ \frac{-15.64}{4.6} \approx -3.4043478260869565 \]
For practical purposes, you can round this to a few decimal places. Using three decimal places:
\[ x < -3.404 \]
Thus, the solution is:
\[ x < -3.404 \]