To find two or more numbers that, when added in any order, result in the same sum as 423 + 108, you can use the commutative property of addition.
Let's call one of the numbers "x." So, the equation becomes:
x + 423 = 423 + 108
Now, subtract 423 from both sides of the equation to isolate "x":
x = 108
So, when you add 423 and 108 in any order, you will always get the sum of 531.