The image you have uploaded shows a grid structure containing nine circles with addition signs in the middle, implying that it is some form of mathematical puzzle. There are numbers equal to 90 written on the right side and bottom, which likely represent the sum for each row and column in the puzzle.

It looks like the objective is to assign numbers to the circles such that the sum of the numbers in each row and each column equals 90.

Would you like me to help you solve this puzzle step by step?

Here are some questions related to this:

1. Have you been provided any specific numbers or constraints for each circle?
2. Are all the circles supposed to hold the same numbers, or should different numbers be assigned?
3. Is the sum of diagonals also constrained to equal a specific value?
4. Is there any relation between adjacent circles that affects the sum?
5. Would you like assistance with the algebraic approach to solve this grid?

Tip: Solving grid-based puzzles often involves setting up equations for each row and column to help determine the missing numbers.