Выполните вычитание: 6 3/8-2 5/9.

\[6\frac{3^{\backslash 9}}{8} - 2\frac{5^{\backslash 8}}{9} = 6\frac{27}{72} - 2\frac{40}{72} =\]

\[= 5\frac{99}{72} - 2\frac{40}{72} = 3\frac{59}{72}\]