a si b Dau coroana !!
![A Si B Dau Coroana class=](https://ro-static.z-dn.net/files/d10/df618a3e23c46035a439362aa496e17a.jpg)
Răspuns:
A). Y=5+6x
3x+5+6x=14
3x-6x=14+5
-3x=20
X=20:-3
X=6,6666666
B) 8x-3y=1
4x+12y=5/*2
8x-3y=1
8x+24y=1o
27/11
8x-3y=1/*4
4x+12y=5
32x-12y=4
4x+12y=5
36/9
S={27/11si 36/9}