👤

Calculati va rog dau max puncte 1{x+y=-1.
2x-3=5.
2{3x+y=35
x-y=5


Răspuns :

x+y=-1 |•3
2x-3y=5

3x+3y=-3
2x-3y=5
_______
5x / =2 => x=2/5 => y=-7/5

3x+y=35
x-y=5
_______
4x / =40 => x=10 => y=5