Two students convert recurring decimals to fractions. Student A says 0.4444... = 4/9. Student B says 0.7777... = 7/9. Which, if any, are correct?

Question

Accepted Answer

Both are correct. For a single repeating digit d, 0.ddd... = d/9. So 0.4444... = 4/9 and 0.7777... = 7/9. Both correct.

Two students convert recurring decimals to fractions.
Student A says $0.4444... = \frac{4}{9}$ .
Student B says $0.7777... = \frac{7}{9}$ .
Which, if any, are correct?