72×56+28×56 = = = 怎样简便怎样算.
问题描述:
72×56+28×56 = = = 怎样简便怎样算.
答
(72+28)*56100*56
=5600不带**是乘号哦哦
72×56+28×56 = = = 怎样简便怎样算.
(72+28)*56100*56
=5600不带**是乘号哦哦