Plis na teraz daje 30

c)
[tex]\frac{1}{16} \ odwrotno\'s\'c \ liczby \ to \ \frac{16}{1} = 16[/tex]
d)
[tex]3\frac{1}{4} = \frac{13}{4} \ odwrotno\'s\'c \ liczby \ to \ \frac{4}{13}[/tex]