2.Stiind că:
3. Dacă:
(ex. 2 si 3)
![2Stiind Că 3 Dacă Ex 2 Si 3 class=](https://ro-static.z-dn.net/files/de2/588e87a1dc72f2044c4ebdf70d8df130.png)
Răspuns:
a) x/y=2/3 → 2x/2x+5y=22/22+53
b)x/y=4/5→3x+2y/2y=34+25/25
c)x/y=3/2→4x-5y/5y=43-52/52