a)
[tex] \frac{2}{5} + \frac{4}{5} = \frac{6}{5} = 1 \frac{1}{5} [/tex]
b)
[tex] \frac{3}{7} + \frac{6}{7} = \frac{9}{7} = 1 \frac{2}{7} [/tex]
c)
[tex] \frac{5}{8} + \frac{7}{8} = \frac{12 }{8} = \frac{3}{2} = 1 \frac{1}{2} [/tex]
d)
[tex] \frac{10}{11} + \frac{6}{11} = \frac{16}{11} = 1 \frac{5}{11} [/tex]
