StevenXClontz’s Twitter Archive—№ 8,010

Does there exist an integer x such that there's a unique way to assign the digits 1–9 to the letters A–I satisfying x + ABCD = EFGHI? The below puzzle gives an example for 22486 with the added constraint D=9. Without it, 22486 + 3481 = 25967 is another assignment.