[tex]b)\\\\1\frac{2}{5}+\frac{4}{5}=1\frac{2}{5}+\frac{4}{5}=1\frac{6}{5}=2\frac{1}{5}\\\\c)\\\\4\frac{4}{7}+\frac{3}{7}=4\frac{7}{7}=5\\\\d)\\\\5\frac{5}{8}+3\frac{7}{8}=8\frac{12}{8}=9\frac{4}{8}=9\frac{1}{2}[/tex]
[tex]e)\\\\ 6\frac{8}{9}+7\frac{4}{9}=13\frac{12}{9}=14\frac{3}{9}=14\frac{1}{3}\\\\f)\\\\7\frac{3}{5}+2\frac{2}{5}=9\frac{5}{5}=10[/tex]
