The answer is move a match from 6 to 4, we will have 5+4=9

The answer is to move a single matchstick from the number 6 to create the number 4. By doing this, the mathematical equation becomes 5 + 4 = 9, which is a true statement. To achieve this, you need to carefully analyze the arrangement of the matchsticks forming the number 6. Typically, the number 6 is created using a loop and a vertical line. If you take one matchstick from the loop and reposition it, you can form the number 4, which is constructed from two vertical lines and one horizontal line. The equation visually and mathematically balances perfectly after this adjustment, showcasing a simple yet clever solution to the puzzle.