Respuesta :

X - 6 = -5

If we add 6 to both sides we get:
X - 6 + 6 = -5 + 6
X = 1
x=1

1-6=-5 
If you're doing it straight across this way, then when you subtract one from six, (since six is larger than one,) it will become a negative number.
Hope that helped!