Resposta:
a)
[tex] \frac{5}{3} + \frac{1}{6} = \frac{11}{6} [/tex]
b)
[tex] \frac{4}{9} - \frac{2}{3} = \frac{2}{9} [/tex]
c)
[tex]0.3 + \frac{1}{5} = \frac{1}{2} [/tex]
d)
[tex] \frac{2}{5} - \frac{1}{5} = \frac{1}{5} [/tex]
