87.84/1.6/6.14用简便方法
答案:1 悬赏:10 手机版
解决时间 2021-01-17 02:12
- 提问者网友：咪咪
- 2021-01-16 09:25
87.84/1.6/6.14用简便方法
最佳答案
- 五星知识达人网友：话散在刀尖上
- 2021-01-16 09:34
87.84/1.6/6.14
=（84+3.2+0.64+4）/1.6/6.14
=(80/1.6+3.2/1.6+0.64/1.6+4/16)/6.4
=(5+2+0.4+0.25)/6.4
=7.65/6.4
=(6.4+1.28-0.03)/6.4
=6.4/6.4+1.28/6.4-0.03/6.4
=1+0.2-0.0046875
=1.2-0.0046875
=-1.1953125
=（84+3.2+0.64+4）/1.6/6.14
=(80/1.6+3.2/1.6+0.64/1.6+4/16)/6.4
=(5+2+0.4+0.25)/6.4
=7.65/6.4
=(6.4+1.28-0.03)/6.4
=6.4/6.4+1.28/6.4-0.03/6.4
=1+0.2-0.0046875
=1.2-0.0046875
=-1.1953125
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