[tex] \frac{13}{10} - \frac{1}{2} \div \frac{8}{3} = \frac{13}{10} - \frac{1}{2} \times \frac{3}{8} [/tex]
[tex] = \frac{13}{10} - \frac{3}{16} [/tex]
[tex] = \frac{104}{80} - \frac{15}{80} [/tex]
[tex] = \frac{104 - 15}{80} [/tex]
[tex] = \frac{89}{80} [/tex]
