va rog mult ,am nevoie urgent
![Va Rog Mult Am Nevoie Urgent class=](https://ro-static.z-dn.net/files/deb/223e17fa14e7cb28ca69863f50925d0a.jpg)
Răspuns:
a) 2x+y=10/2
x-2y=-5
4x+2y=20
x-2y=-5
5x= 15. x=3
y=10-2x=10-6=4. y=4
b) x+y= 7/-2
x+2y=10
-2x-2y=-14
x+2y=10
-x=-4. x=4
y=7-4=3. y=3