Odpowiedź:
a)
[tex]\frac{1}{2} + \frac{1}{3} + \frac{1}{4} = \frac{6}{12} + \frac{4}{12} + \frac{3}{12} = \frac{13}{12}[/tex]
b)
[tex]1\frac{2}{5} + 3\frac{4}{10} + 2\frac{1}{2} = 1\frac{4}{10} + 3\frac{4}{10} + 2\frac{5}{10} = 6\frac{13}{10} =7\frac{3}{10}[/tex]
c)
[tex]4\frac{1}{3} - 2\frac{2}{5} + 1\frac{1}{5} = 4\frac{5}{15} - 2\frac{10}{15} + 1\frac{5}{15} = 3[/tex]
d)
[tex]7 - 3\frac{1}{3} - 2\frac{1}{8} = 7 -3\frac{8}{24} - 2\frac{3}{24} = 2\frac{5}{24}[/tex]
e)
[tex]3\frac{3}{4} - 2\frac{2}{3} + 6 - 3\frac{5}{6} = 3\frac{9}{12} - 2\frac{8}{12} + 6 - 3\frac{10}{12} = 3\frac{3}{12} = 3\frac{1}{4}[/tex]
f)
[tex]10 - (2\frac{1}{9} - \frac{1}{2} + 1\frac{5}{6}) = 10 - (2\frac{2}{18} - \frac{9}{18} + 1\frac{15}{18}) = 10 - 3\frac{8}{18} = 6\frac{10}{18} = 6\frac{5}{9}[/tex]
g)
[tex](4\frac{1}{3} - 2\frac{2}{5}) - (6\frac{3}{5} - 5\frac{2}{3}) = (4\frac{5}{15} - 2\frac{6}{15}) - (6\frac{9}{15} - 5\frac{10}{15}) = 1\frac{14}{15} - \frac{14}{15} = 1[/tex]
h)
[tex]3\frac{1}{4} + 2\frac{2}{5} - (4\frac{1}{3} - 2\frac{2}{3}) = 3\frac{1}{4} + 2\frac{2}{5} - 1\frac{2}{3} = 3\frac{15}{60} + 2\frac{24}{60} - 1\frac{40}{60} = 3\frac{59}{60}[/tex]
