{2x + 6y = -1
{x + 8y = 2
{x = 2 - 8y
2(2 - 8y) + 6y = -1
4 - 16y + 6y = -1
4 - 10y = -1
-10y = -1 - 4
-10y = -5
y = 1/2
x = 2 - 8 × 1/2
x = 2 - 4
x = -2
Besitos OvO
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Método: Sustitución
{2x + 6y = -1
{x + 8y = 2
{2x + 6y = -1
{x = 2 - 8y
Para y...
2(2 - 8y) + 6y = -1
4 - 16y + 6y = -1
4 - 10y = -1
-10y = -1 - 4
-10y = -5
y = 1/2
Para x...
x = 2 - 8 × 1/2
x = 2 - 4
x = -2
(x, y) = (-2, 1/2)
Besitos OvO