Odpowiedź:
a) [tex]\frac{1}{6} =\frac{3}{18}[/tex]
[tex]\frac{1}{9} =\frac{2}{18}[/tex]
[tex]\frac{3}{18} +\frac{2}{18} =\frac{5}{18}[/tex]
b) [tex]\frac{1}{6} =\frac{5}{30}[/tex]
[tex]\frac{2}{15} =\frac{4}{30} \\[/tex]
[tex]\frac{5}{30} +\frac{4}{30} =\frac{9}{30}[/tex]
c) [tex]\frac{2}{12} =\frac{6}{36}[/tex]
[tex]\frac{4}{9} =\frac{16}{36}[/tex]
[tex]\frac{6}{36} +\frac{16}{36} =\frac{22}{36}[/tex]
d) [tex]\frac{5}{12} =\frac{10}{24}[/tex]
[tex]\frac{3}{8} =\frac{9}{24}[/tex]
[tex]\frac{10}{24} +\frac{9}{24} =\frac{19}{24}[/tex]
