Question

x+5y=3,
2x+7y=0
Método de sustitución​

Answer 1

Respuesta:

$x + 5y = 3 \\ 2x + 7y = 0$

$x = 3 + 5y$

$2x = 6 - 10y$

$2x + 7y = 0$

$6 - 10y + 7y = 0$

$6 - 3y = 0$

$6 = 3y$

$y = 2$

$x + 5y = 3$

$x + 10 = 3$

$x = - 7$

saludos