Respuesta :
x = -3
plug in x+3 for the y variable.
2x + x + 3 = -6
3x + 3 = -6
3x = -9
divide by 3 on each side
x = -3
plug in x+3 for the y variable.
2x + x + 3 = -6
3x + 3 = -6
3x = -9
divide by 3 on each side
x = -3