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Possible Duplicate:
How to organize labels when there are too many equations?
How do I number equations only if they are referred to in the text?

I have a lot of equations in my documents and I would like to get rid of the numbering for the ones that are not referred, is there a way to do that or I need to do it manually? I used the commands \begin{equation} and \begin{align} for most of them. thanks

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marked as duplicate by Lev Bishop, Gonzalo Medina, cmhughes, Harish Kumar, lockstep Sep 14 '12 at 5:57

This question was marked as an exact duplicate of an existing question.

Please see: this Can you please confirm if this answers your question? – kan Sep 13 '12 at 17:42
See also tex.stackexchange.com/questions/3154/… – Lev Bishop Sep 13 '12 at 17:56
And see tex.stackexchange.com/questions/4728/… – Lev Bishop Sep 13 '12 at 17:57
@KannappanSampath yes, thanks perfect. Thanks to all – inquisitor Sep 13 '12 at 21:50