Szczegółowe wyjaśnienie:
[tex] \frac{3}{15 } = \frac{1}{5} [/tex]
[tex] \frac{2}{10} = \frac{1}{5} [/tex]
[tex] \frac{5}{10} = \frac{1}{2} [/tex]
[tex] \frac{6}{42} = \frac{1}{7} [/tex]
[tex] \frac{8}{12} = \frac{2}{3} [/tex]
pozdrawiam serdecznie NN
