It looks like you've uploaded an image of a mathematical puzzle that involves filling in missing numbers on a grid, along with some equations. Let's break down what's happening:

Grid Breakdown:

1. There are two grids, each containing 4x4 cells. Some numbers are already filled in, while others are missing.
2. The numbers range between 2 and 19.
3. Some rows have mathematical operations (e.g., addition, subtraction) placed between cells to indicate that these operations relate to the numbers in the grid.
4. Along the right-hand side, there are equations corresponding to parts of the grid.

Equations on the Right:

• 15 - 3 = ?
• 19 - 6 = ?
• 14 - 4 = ?
• 18 - 2 = ?

It seems like these equations should help you fill in the missing cells in the grid. I'll guide you through one row as an example.

For instance:

• 15 - 3 = 12, so one of the cells in the corresponding row or column will likely contain the number 12.

Would you like to walk through solving this step-by-step, or do you prefer more details about how the grid works? Here are five questions to expand on this:

1. Would you like help solving each equation step by step?
2. Do you want to explore how to fill in the numbers in the yellow squares?
3. Are the grid operations based on rows or columns, or both?
4. Is there a pattern that links the green and yellow cells?
5. Should we analyze how subtraction and addition are used differently across the grids?

Tip: Always start by solving the simplest equations to fill in the easiest squares, and then build on that to solve the more complex parts of the grid.