Odpowiedź:
[tex] \frac{7 - 3 \frac{3}{7} }{2} = \frac{ \frac{49}{7} - \frac{24}{7} }{2} = \frac{25}{7} \times \frac{1}{2} = \frac{25}{14} = 1 \frac{11}{14} [/tex]
