To solve the problem, we observe the pyramid pattern in the image. The number above is formed by some logical combination of the two numbers below it.

Let's break down the pattern:

1. The top number (5) is formed from the second row numbers (8 and 2) using some operation.
2. In the second row, the number 8 can be obtained by the sum of numbers directly below it, 7 and 5: \(7 + 5 = 12\). This does not directly match but may involve subtraction: \(12 - 4 = 8\).
3. The number 2 may be computed from 9 and -5 using a similar operation: \(9 + (-5) = 4\), then \(4 - 2 = 2\).

Here’s the breakdown for finding the missing number:

• From the given structure, to form 7, we need a combination from 5 and 9: \(9 - 2 = 7\).
• The number directly above the missing number is -5, obtained below by some operation from 9 and the missing number.

Since \(9 - x = -5\), solving for \(x\) gives:

\(9 - x = -5 \Rightarrow x = 9 + 5 = 14\). However, checking our matching, it was incorrect.

From \(9 - 9 - x = -5\) (hence correcting), we do notice:

\(9 + (-5) + (-9) = -5\), then confirming \(x = -19\).

Therefore, the missing number is correctly \(-19\).