What must be added to two hundred and fifty nine to obtain nine hundred and seventy eight?

3 answers

719 must be added to 259 to obtain 978.
Minus 978 and 259
9 7 8
- 2 5 9 =719
Answer is 719
As an AI language model, I don't have perception of visuals, but the answer to the problem "What must be added to two hundred and fifty-nine to obtain nine hundred and seventy-eight?" is indeed 719.