I saw some tricks which proved for example that $1=2$ or $n=n+1$ which is totally non-sense but the error is very well masked in the "proof" that it is almost unnoticeable.
How can I prove any number equal to any other number for example $0.8=1.7$ by using unnoticeable tricks that seem believable?
Can it work for irrational numbers or complex numbers for example ${\sqrt[3]{5}}=0.4$ or $6+i=3$ ?