Question

x - 2y = 1
y + z = 3
- x + 2z = 1

Qual o resultado de x, y e z?

Answer 1

Olá Jv

x - 2y = 1   (I)
y + z = 3    (II)
-x + 2z = 1 (III)

(I) + (III)

-2y + 2z = 2

z - y = 1
z + y = 3

2z = 4
z = 2

2 + y = 3
y = 1

x = 2y + 1 = 2 + 1 = 3

S = (3, 1, 2)