Brainly Im back after like 30 minutes of my dad trying to explain and saying "thats f-ed up"

Like he said, don't just give me the answer. Explain it to me.

Here is an equation: 4x - 4 = 4x + _____. What could you write in the blank so the equation would be True for no values of x.


o 4x

o -7

o 19

o 2x

o -4