Revision history of "2 − −7 = 9" (Z17118)

Axtiri n umgerrad: rcem tankulin akken ad teẓreḍ imgerraden ger tisiwal u wekki ɣef enter/entrée neɣ ɣef taqeffalt deg ukessar.
Tabadut: (tura) = amgirred akk d tasiwelt n tura, (amgirred) = amgirred akk d tasiwelt ssabeq, M = abeddel afessas.