7 2/3 - (2 1/3 -13/7) * 7/19

[tex] \frac{72}{3} - ( \frac{21}{3} - \frac{13}{7}) \times \frac{7}{19} = \frac{72}{3} - \frac{36}{7} \times \frac{7}{19} = \frac{420}{19} = 22 \times \frac{2}{19} [/tex]