Cześć ;-)
Od a) do d)
[tex]\frac{1}{6}+\frac{2}{5}=\frac{5}{30}+\frac{12}{30}=\frac{17}{30}\\\\\frac{8}{9}-\frac{5}{6}=\frac{16}{18}-\frac{15}{18}=\frac{1}{18}\\\\1\frac{1}{5}+8\frac{1}{7}=1\frac{7}{35}+8\frac{5}{35}=9\frac{12}{35}\\\\4\frac{7}{10}-2\frac{1}{3}=4\frac{21}{30}-2\frac{10}{30}=2\frac{11}{30}[/tex]
Od e) do h)
[tex]4\frac{1}{5}-\frac{7}{10}=4\frac{2}{10}-\frac{7}{10}=3\frac{12}{10}-\frac{7}{10}=3\frac{5}{10}=3\frac{1}{2}\\\\6\frac{1}{8}-2\frac{3}{4}=6\frac{1}{8}-2\frac{6}{8}=5\frac{9}{8}-2\frac{6}{8}=3\frac{3}{8}\\\\10\frac{2}{3}-6\frac{7}{9}=10\frac{6}{9}-6\frac{7}{9}=9\frac{15}{9}-6\frac{7}{9}=3\frac{8}{9}\\\\9\frac{3}{8}-2\frac{5}{6}=9\frac{9}{24}-2\frac{20}{24}=8\frac{33}{24}-2\frac{20}{24}=6\frac{13}{24}[/tex]
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