Question

What is the error in the proof? (more in details)

Answer 1

Dividing `0` by `0` is indeterminable

Explanation:

The error in the proof results when you divide: `(x+y-z)` by `(x+y-z)`, it should work in any case but one, and here that it is the case:

`x+y-z=0`

And dividing `0` by `0` is indeterminable

`11(0)=10(0)` `->` this is true

Until you divide `0` by `0`