Resposta:
[tex] \frac{8}{3} + \frac{5}{3} = \frac{13}{3} \\ \\ \frac{7}{6} \times \frac{4}{2} = \frac{28}{12} = \frac{7}{3} [/tex]
[tex] \frac{9}{2} \div \frac{8}{4} = \frac{9}{2} \times \frac{4}{8} = \frac{36 }{16} = \frac{9}{4} \\ \\ \frac{4}{2} - \frac{5}{2} = \frac{ - 1}{2} \\ \\ \frac{7}{3} + \frac{4}{3} = \frac{11}{3} [/tex]
