1. **State the problem:** Solve the equation $-3 = -4 = c$ for $c$. 2. **Analyze the equation:** The equation $-3 = -4 = c$ is ambiguous because it suggests $-3 = -4$ and $-4 = c$ simultaneously. 3. **Check the equality $-3 = -4$:** This is false since $-3$ is not equal to $-4$. 4. **Conclusion:** Since $-3 = -4$ is false, the entire equation cannot hold true for any value of $c$. Therefore, there is no solution for $c$ that satisfies $-3 = -4 = c$.