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Puzzles, situation puzzles and recreational mathematics.

situation puzzles and recreational mathematics. Neuron juice
 
 
 

Neuron juice.

The important thing is not to stop questioning. (Albert Einstein.)

  

 

Evidence that two is not equal to one. 2 = 1 .

 

Dos es igual a uno

Obviously two is not equal to one, the show that says otherwise has a hidden error between the lines 4 and 5.
Line 4 - Factoring :
to ( b - a) = (a + b ) ( b - a)
Line 5 - And simplifying the term ( b - a) :
a = a + b
By simplifying the term ( b -a) we do we are divide both sides of equality ( b -a) , or what is the same, divide by zero , invalid operation.
The math does not lie.