Simplify the following text for a Grade 3 native English-speaking person.
Original: Although these proofs demonstrate that 0.999 ... = 1 , the extent to which they explain the equation depends on the audience .
Simplified: It is hard for many people to understand why 0.999 ... is the same as 1 . There are many proofs that show why they are the same number , but many of these proofs are very complex .