69x78+39x62怎么巧算
答案:2 悬赏:60 手机版
解决时间 2021-04-07 01:28
- 提问者网友:低吟詩仙的傷
- 2021-04-06 08:51
69x78+39x62怎么巧算
最佳答案
- 五星知识达人网友:不想翻身的咸鱼
- 2021-04-06 09:18
69x78+39x62
=69x78+78x31
=(69+31)x78
=100x78
=7800
=69x78+78x31
=(69+31)x78
=100x78
=7800
全部回答
- 1楼网友:玩家
- 2021-04-06 10:18
69x78+39x62
=69x78+39x2x62/2
=69x78+78x31
=78x(69+31)
=78x100=7800
=69x78+39x2x62/2
=69x78+78x31
=78x(69+31)
=78x100=7800
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