Question

2x+2y = 6       x= 4y +8

posibles respuestas
x= 4 y= -1
x= 3 y= 5
x= 2 y= 0
Ninguna
x= 2 y= 9
x= 0 y= 2 ​

Answer 1

Respuesta:

x=4 y=-1

Explicación paso a paso:

$2x + 2y = 6 \\ 2x = 6 - 2y \\ x = \frac{6 - 2y}{2} \\ 4y + 8 = \frac{6 - 2y}{2} \\ 8y + 16 = 6 - 2y \\ 2y + 8y = 6 - 16 \\ 10y = - 10 \\ y = \frac{ - 10}{10} = - 1$

$x = 4y + 8 \\ x = 4 \times ( - 1) + 8 = - 4 + 8 = 4 \\ 2x + 2y = 2 \times 4 + 2 \times ( - 1) = 8 + ( - 2) = 8 - 2 = 6$