[tex](4 \frac{5}{8} + 3\frac{3}{8} ) - (5 \frac{1}{3} - \frac{8}{3} ) = 7 \frac{8}{8} - (5 \frac{1}{3} - 2 \frac{2}{3} ) =\\= 7 \frac{8}{8} - (4 \frac{4}{3} - 2 \frac{2}{3} ) = 8 - 2 \frac{2}{3} = 7 \frac{3}{3} - 2 \frac{2}{3} = 5 \frac{1}{3} [/tex]