Question

03) Resolvendo o sistema: { x-2y=-6 2x+y= -2 O valor de x e y é: (A) S = ( 2, -2) (B) S = (-2, -2) (C) S = ( 2, 2) (D) S = (-2, 2)​

Answer 1

Explicação passo-a-passo:

x - 2y = -6

2x + y = -2

x - 2y = -6

4x + 2y = -4

5x = -10

x = -2

-2x + 4y = 12

2x + y = -2

5y = 10

y = 2

S = (-2, 2)