Respuesta :

Answer:

x=-2/3, y=14/3. (-2/3, 14/3).

Step-by-step explanation:

x+y=4

y=2x+6

x+2x+6=4

3x+6=4

3x=4-6

3x=-2

x=-2/3

-2/3+y=4

y=4-(-2/3)

y=4+2/3

y=12/3+2/3

y=14/3