Question

Stind ca: 3ori x+2ori y=17 si 2ori x+2ori y=13 determinati x
CORONITA 5 STELE MULTUMESC SI 15 PUNCTE
VAAAAA ROGGG

Answer 1

3 x X + 2 x y -2 x X+ 2 x y
17-13=4
 x=4
3 x 4 + 2 x y =12+ 2 x y  =17
2y=17 - 12
2y= 5
y= 5 : 2
y= 2,5
P: 3 x 4 + 2 x 2,5= 12 + 5 = 17