Respuesta :

Bababoy1013

Answer:

x= -1

Step-by-step explanation:

since y is -5 then we would put that in the second equation:

2x - 4(-5) = 18

then it’s:

2x + 20 = 18

Then we subtract 20 from both sides

2x = -2

Last we divide both by 2 and we get x = -1

Answer:

x= -1

Step-by-step explanation:

2x + 20 =18

2x = 18 - 20

x = -1