Inspired by yesterday's post about a wonderful task for preschoolers. Remembered from childhood. At school at the Olympiad there was one problem that I still remember, because at the Olympiad itself no one, including myself, decided, but then I copied it and only at home, after several hours of reflection, she succumbed.
The rules are simple - numbers are hidden behind letters, each letter is only one number, equality with correct replacement of letters with numbers is true.
FORTY + ONE = THREE ')
UPD: may be interested in not entirely clear condition. But I can swear it sounded exactly like that at the Olympiad. The answer should be an equality, where instead of letters numbers are written. Each letter is just one digit.