Four is equal to five

|Theorem: 4 = 5Proof:-20 = -2016 – 36 = 25 – 454^2 – 9*4 = 5^2 – 9*54^2 – 9*4 + 81/4 = 5^2 – 9*5 + 81/4(4 – 9/2)^2 = (5 – 9/2)^24 – 9/2 = 5 – 9/24 = 5