Odpowiedź:
[tex] \frac{2}{10} = \frac{2 \div 2}{10 \div 2} = \frac{1}{10} [/tex]
[tex] \frac{13}{26} = \frac{13 \div 13}{26 \div 13} = \frac{1}{2} [/tex]
[tex] \frac{15}{25} = \frac{15 \div 5}{25 \div 5} = \frac{3}{5} [/tex]
[tex] \frac{7}{28} = \frac{7 \div 7}{28 \div 7} = \frac{1}{4} [/tex]
