Răspuns :
[tex] \frac{3}{9}= \frac{1}{3} [/tex]
[tex] \frac{16-1}{90}= \frac{15}{90}= \frac{1}{6} [/tex]
[tex] \frac{16-1}{90}= \frac{15}{90}= \frac{1}{6} [/tex]