Odpowiedź :
[tex]1)\\\\2 \frac{1}{7}: 10 = \frac{\not{15}^3}{7} *\frac{1}{\not{10}^2} =\frac{3}{14} \\\\2)\\\\\frac{2}{5}-\frac{1}{10}=\frac{4}{10}-\frac{1}{10}=\frac{3}{10}\\\\3)\\\\12*\frac{3}{5}=\frac{36}{5}=7\frac{1}{5}[/tex]
[tex]1)\\\\2 \frac{1}{7}: 10 = \frac{\not{15}^3}{7} *\frac{1}{\not{10}^2} =\frac{3}{14} \\\\2)\\\\\frac{2}{5}-\frac{1}{10}=\frac{4}{10}-\frac{1}{10}=\frac{3}{10}\\\\3)\\\\12*\frac{3}{5}=\frac{36}{5}=7\frac{1}{5}[/tex]