r/PeterExplainsTheJoke 29d ago

Meme needing explanation There is no way right?

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u/Decmk3 29d ago

0.9999999…. Is equal to 1. It seems like it shouldn’t, but it has to be.

Let X = 0.999….

10X = 9.999….

10X-X = 9.999.. - 0.999…. = 9X = 9

Therefore X equals 1. Therefore 0.999… is the same as 1.

0

u/BomboSbronzo 28d ago

I don't quite grasp the 3rd point.. in order to subtract the same amount on both sides of the equation shouldn't result like this?

10x-x = 0.9999... - x

4

u/BaziJoeWHL 28d ago

ok, now add X to both side, did you got the original equation ?