Explicación paso a paso:
{2x + y = 4
{y + 3z = 11
{x + 2z = 7
{x = 2 - 1/2 × y
{2 - 1/2 × y + 2z = 7
{-y + 4z = 10
7z = 21
z = 3
-y + 4 × 3 = 10
-y + 12 = 10
-y = 10 - 12
-y = -2
y = 2
x = 2 - 1/2 × 2
x = 2 - 1
x = 1
Besitos OvO
