Solve the matrix problems, specifically identifying the pattern and finding the missing value (x).

Here are the solutions to the problems:

For questions 14, 15, 16, and 17, the pattern is that the sum of the numbers in the first column is equal to the sum of the numbers in the second column.

14.
Let the missing value be $x$.
The grid is:

$$\begin{bmatrix} 0.9 & 0.5 \\ 1.8 & 2.2 \\ 0.5 & x \end{bmatrix}$$