7 5/9 - 6 7/9 =

To subtract mixed numbers, it's often easier to convert them to improper fractions:

\( 7 \frac{5}{9} = \frac{(7 \times 9) + 5}{9} = \frac{63 + 5}{9} = \frac{68}{9} \)

\( 6 \frac{7}{9} = \frac{(6 \times 9) + 7}{9} = \frac{54 + 7}{9} = \frac{61}{9} \)

Now, subtract the improper fractions:

\( \frac{68}{9} - \frac{61}{9} = \frac{68 - 61}{9} = \frac{7}{9} \)

Ответ: 7/9