4) 30/100 x 5000 = 0,3 x 5000 = 1500 lei
5) 2/3 x 60 = 0,66 x 60 = 39,9 kg
6) - nu se vede tot
7) [tex] \frac{6}{12} = \frac{1}{2} [/tex]
[tex] \frac{24}{36} = \frac{4}{6} [/tex]
[tex] \frac{42}{60} = \frac{7}{10} [/tex]
[tex] \frac{96}{30} = \frac{16}{5} [/tex]
[tex] \frac{18}{54} = \frac{3}{9} [/tex]