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The '''equal division of 9/7''' ('''ed9/7''') is a [[tuning]] obtained by dividing the [[9/7|septimal supermajor third (9/7)]] in a certain number of [[equal]] steps. 

ED9/7 tuning systems that accurately represent the intervals 9/8 and 8/7 include: [[15ed9/7]] (0.87 cent error), [[17ed7/5]] (0.84 cent error), and [[32ed7/5]] (0.04 cent error).

[[15ed9/7]], [[17ed9/7]], and [[32ed9/7]] are to the [[Ed9/7|division of 9/7]] what:
* [[13ed4/3]], [[15ed4/3]], and [[28ed4/3]] are to the [[Ed4/3|division of 4/3]]
* what [[11ed7/5]], [[13ed7/5]], and [[24ed7/5]] are to the [[Ed7/5|division of 7/5]]
* what [[9edf|9ed3/2]], [[11edf|11ed3/2]], and [[20edf|20ed3/2]] are to the [[EDF|division of 3/2]]
* what [[7ed5/3]], [[9ed5/3]], and [[16ed5/3]] are to the [[Ed5/3|division of 5/3]]
* and what [[5edo]], [[7edo]], and [[12edo]] are to the [[EDO|division of 2/1]].
[[Category:Equal-step tuning]]