Odpowiedź:
DZIELENIE:
[tex]1 : \frac{2}{5} = \frac{5}{5} : \frac{2}{5} = \frac{5}{5} * \frac{5}{2} = \frac{5}{1} * \frac{1}{2} = \frac{5}{2} = 2\frac{1}{2}[/tex]
[tex]\frac{5}{2} : \frac{2}{5} = \frac{5}{2} * \frac{5}{2} = \frac{25}{4} = 6\frac{1}{4}[/tex]
[tex]\frac{1}{2} : \frac{2}{5} = \frac{1}{2} * \frac{5}{2} = \frac{5}{4} = 1\frac{1}{4}[/tex]
MNOŻENIE:
[tex]1 *\frac{2}{5} = \frac{5}{5} * \frac{2}{5} = \frac{1}{5} * \frac{2}{1} = \frac{2}{5}[/tex]
[tex]\frac{5}{2} * \frac{2}{5} = \frac{1}{1} * \frac{1}{1} = 1[/tex]
[tex]\frac{1}{2} * \frac{2}{5} = \frac{1}{1} * \frac{1}{5} = \frac{1}{5}[/tex]
2 raz DZIELENIE:
[tex]8 : \frac{2}{5} = 7\frac{5}{5} : \frac{2}{5} = \frac{40}{5} : \frac{2}{5} = \frac{40}{5} * \frac{5}{2} = \frac{20}{1} * \frac{1}{1} = \frac{20}{1} =20[/tex]
[tex]\frac{7}{10} : \frac{2}{5} = \frac{7}{10} * \frac{5}{2} = \frac{7}{2} * \frac{1}{2} = \frac{7}{4} = 1\frac{3}{4}[/tex]
[tex]\frac{4}{5} : \frac{2}{5} = \frac{4}{5} * \frac{5}{2} = \frac{2}{1} * \frac{1}{1} = \frac{2}{1} = 2[/tex]
Szczegółowe wyjaśnienie:
