Your friend was solving the equation shown and was confused by the result "-20 = -20." Explain what this result means.
4(y - 5) - 2y = 6y - 20 - 4y
4y - 20 - 2y = 6y - 20 - 4y
2y - 20 = 2y - 20
-20 = -20
I’ll give {brainiest} pls help me