Odpowiedź:
[tex]\frac{1}{5} +\frac{1}{2} = \frac{2}{10} +\frac{5}{10} = \frac{7}{10}[/tex]
[tex]\frac{3}{4} + \frac{1}{2} = \frac{3}{4} +\frac{2}{4} =\frac{5}{4} = 1\frac{1}{4}[/tex]
[tex]\frac{1}{6} + \frac{1}{2} = \frac{1}{6} + \frac{3}{6} = \frac{4}{6}[/tex]
[tex]\frac{4}{5} + \frac{2}{3} = \frac{12}{15} + \frac{10}{15} = \frac{22}{15} =1\frac{7}{15}[/tex]
[tex]\frac{2}{3} + \frac{3}{4} = \frac{8}{12} + \frac{9}{12} = \frac{17}{12} = 1\frac{5}{12}[/tex]
