2000-45*26+78简便
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2000-45*26+78简便 2000-45×26+78 = 2000-45×2×13+78 = 2000-90×13+78 =2000-1170+78 =830+78 =908
咨询记录 · 回答于2023-03-18
2000-45*26+78简便
2000-45*26+78简便
2000-45*26+78简便 2000-45×26+78 = 2000-45×2×13+78 = 2000-90×13+78 =2000-1170+78 =830+78 =908