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sophia91
Oct 11, 2009, 10:01 AM
how can I proof that [x]+1=[x+1] is always corect? Please help:confused: :confused: :confused: :confused:
Perito
Oct 11, 2009, 02:37 PM
You're trying to prove the associative law of addition.

Addition of natural numbers/Proofs - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Addition_of_natural_numbers/Proofs)
mathwiz3502
Oct 14, 2009, 06:00 PM
Listen to Perito