Adding the numbers, since they settle part of this. Keep the original post as written when you update it, and add the correction underneath. An edited-away mistake is invisible to the next person who makes it.
One thing that is still open after TrialNerd_Beth’s answer:
How long did you give it before you decided it was working?
wendy_avl said:Keep the original post as written when you update it, and add the correction underneath.
Worth saying that the confident version of this is more useful to the person writing it than to the person reading it.
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Browse GL Biochemwendy_avl said:Keep the original post as written when you update it, and add the correction underneath.
That is right for the common case. Whether it is right for the case being asked about depends on a detail that has not been given.
wendy_avl said:Keep the original post as written when you update it, and add the correction underneath.
Thank you — that is the clearest version of this I have read, and I have read a lot of them. Printing the relevant bit and taking it with me.