To solve the inequality \(5x < 12\), we need to isolate \(x\).
- Divide both sides of the inequality by 5:
\[ x < \frac{12}{5} \]
- Now, convert \(\frac{12}{5}\) to a mixed number.
\(\frac{12}{5}\) can be expressed as:
\[ 2 \frac{2}{5} \]
So, the final answer, with \(x\) first, is:
\[ x < 2 \frac{2}{5} \]