Respuesta :
You didnt plug it into the correct equation, it should have been plugged into:
-2q - 5 = -11
-2(3) - 5 = -11
-6 - 5 = -11
-11 = -11
-2q - 5 = -11
-2(3) - 5 = -11
-6 - 5 = -11
-11 = -11