2.Efectuati calculele:
![2Efectuati Calculele class=](https://ro-static.z-dn.net/files/d54/5805904904bb043c6d962c907a661ce5.jpg)
Explicație pas cu pas:
A) - 4/3
C) 5/4
E)31/4×8/31= - 2
G) 67/16×2/9=67/72
B) = - 1/6
D)72/21=36/7