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In Excel i've got column A values that are between 3-21. I want to convert them in column B, in order to have the first value 3 = 1 and the last value 21 = -1. Is this possible?

Thank you!

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In B1 enter:

=(-A1+12)/9 and copy down

于 2013-08-18T21:30:14.297 回答