To solve the inequality \( x + 15 \geq 3 \), follow these steps:
- Subtract 15 from both sides of the inequality:
\[ x + 15 - 15 \geq 3 - 15 \]
- Simplifying both sides gives:
\[ x \geq -12 \]
So, the inequality with \( x \) coming first is:
\[ x \geq -12 \]