Question

2. Rezolvati urmatoarele sisteme de ecuatii, in multimea numerelor reale:
a)
(2x - y =3
(x+2y=6
b)
(3x - 2y = 4
12x + 4y = 8
c)
12(x – 3) + y - 4 = -3
1 x-6+3(5+ y) = 5
d)
3(x + y) – 2y = 1
15(2x + y) - 4x =-15
e)
1
3x + 2y_
x+y ,
8
2
2
2.
3x + y x+2y = -1
3
2
f)
3x + y + 5 2x – y +10
3
2
2x + 3y - 3 4x + y +6
5
2.​

Answer 1

Răspuns: a. x=12/5, y=18/10

b. x=8/9 , y=-2/3

c. x=23/7, y=-17/7

d.x=30/19, y=-71/19

Explicație pas cu pas: