Odpowiedź:
[tex]e)\ \ 3\frac{2}{7}+6,8=3\frac{2}{7}+6\frac{8}{10}=3\frac{2}{7}+6\frac{4}{5}=3\frac{10}{35}+6\frac{28}{35}=9\frac{38}{35}=10\frac{3}{35}\\\\\\f)\ \ -5\frac{2}{3}+2\frac{1}{4}=-\frac{17}{3}+\frac{9}{4}=-\frac{68}{12}+\frac{27}{12}=-\frac{41}{12}=-3\frac{5}{12}\\\\\\g)\ \ -9,5+(-5\frac{7}{8})=-\frac{95}{10}-5\frac{7}{8}=-\frac{19}{2}-\frac{47}{8}=-\frac{76}{8}-\frac{47}{8}=-\frac{123}{8}=-15\frac{3}{8}[/tex]
[tex]h)\ \ 7\frac{1}{12}+(-4\frac{2}{9})=7\frac{1}{12}-4\frac{2}{9}=7\frac{3}{36}-4\frac{8}{36}=6\frac{39}{36}-4\frac{8}{36}=2\frac{31}{36}[/tex]
