a)
[tex]3 - 1\frac{5}{6} = 1 \frac{1}{6} [/tex]
[tex]2 \frac{3}{8} - \frac{5}{8} = 1 \frac{11}{8} - \frac{5}{8} = 1 \frac{6}{8} 1 \frac{3}{4} [/tex]
[tex]4 \frac{1}{6} - 2\frac{5}{6} = 3 \frac{7}{6} - 2 \frac{5}{6} = 1 \frac{2}{6} = 1 \frac{1}{3} [/tex]
b)
[tex]1 \frac{5}{9} + 2 \frac{1}{3} + 3 \frac{1}{6 } = 1 \frac{10}{18} + 2\frac{6}{18} + 3 \frac{3}{18} = 6 \frac{19}{18} = 7 \frac{1}{18} [/tex]
[tex]4 \frac{5}{6} + 1 \frac{1}{6} + 2 \frac{3}{6} = 7 \frac{9}{6} = 8 \frac{3}{6} = 8 \frac{1}{2} [/tex]
[tex]3 \frac{4}{5} + 2 \frac{2}{1} + \frac{7}{10} = 3 \frac{8}{10} + 2\frac{20}{10} + \frac{14}{20} = 5 \frac{42}{10} = 9 \frac{2}{10} = 9 \frac{1}{5} [/tex]
c)
[tex]3 \frac{5}{8} + 1 \frac{3}{4} + 2 \frac{1}{2} = 3 \frac{5}{8} + 1 \frac{6}{8} + 2 \frac{4}{8} = 6 \frac{15}{8} = 7 \frac{7}{8} [/tex]
[tex]4 \frac{1}{6} - 1 \frac{3}{5} + 2 \frac{1}{2} = 4 \frac{5}{30} - 1 \frac{18}{30} + 2 \frac{15}{30} = 3 \frac{35}{30} - 1 \frac{18}{30} + 2 \frac{15}{30} = 4 \frac{32}{30} = 5 \frac{2}{30} = 5 \frac{1}{15} [/tex]
[tex]4 \frac{1}{2} - 2 \frac{3}{5} - 1 \frac{2}{3} = 4 \frac{15}{30} - 2 \frac{18}{30} - 1 \frac{20}{30} = 3 \frac{45}{30} - 2 \frac{18}{30} - 1 \frac{20}{30} = 1 \frac{27}{30} - 1 \frac{20}{30} = \frac{7}{30} [/tex]
Myślę że pomogłem ;)
