efectuați
4/5×7/2
(-15/32)×(-4/3)

Răspuns:
[tex] \frac{4}{5} \times \frac{7}{2} = \frac{2}{5} \times 7 = \frac{14}{5} [/tex]
[tex] ( - \frac{15}{32} ) \times ( - \frac{4}{3}) [/tex]