Obliczenia
[tex]1\frac{1}{3}+\frac{4}{5}=1\frac{5}{12}+\frac{12}{15}=1\frac{17}{15}=2\frac{2}{15}\\\\2\frac{5}{7}+1\frac{3}{8}=2\frac{40}{56}+1\frac{21}{56}=3\frac{61}{56}=4\frac{5}{56}\\\\\frac{5}{9}+\frac{5}{6}=\frac{10}{18}+\frac{15}{18}=\frac{25}{18}=1\frac{7}{18}\\\\2\frac{3}{10}+3\frac{3}{4}=2\frac{6}{20}+3\frac{15}{20}=5\frac{21}{20}=6\frac{1}{20}\\\\2\frac{4}{5}+\frac{3}{7}=2\frac{28}{35}+\frac{15}{35}=2\frac{43}{35}=3\frac{8}{35}[/tex]
