In this subtraction, the boxes contain the digits 3, 4, 6, and 9 in some order and the circles contain the digits 4, 5, 8, and 9 in some order. What four-digit number is represented

Answer 1

6934 - 4589 = 2345

what? That's not what you wanted? Then you need to provide a little more information about these boxes and circles and how they relate to each other.