Theorem: 3 = 4

Proof: Suppose a + b = c 

This can also be written as:
4a − 3a + 4b − 3b = 4c − 3c 

After reorganizing:
4a + 4b − 4c = 3a + 3b − 3c 

Take the constants out of the brackets:
4(a + b − c) = 3(a + b − c)

Remove the same term left and right:
4 = 3😄