1/4*(4.85÷5/18-3.6+6.15*3又3/5）+[5.5-1.75*(1又2/3+19/21]
答案:1 悬赏:60 手机版
解决时间 2021-11-15 17:02
- 提问者网友：留有余香
- 2021-11-15 00:18
1/4*(4.85÷5/18-3.6+6.15*3又3/5）+[5.5-1.75*(1又2/3+19/21]
最佳答案
- 五星知识达人网友：神也偏爱
- 2021-11-15 01:26
1/4*(4.85÷5/18-3.6+6.15*3又3/5）+[5.5-1.75*(1又2/3+19/21)]
= 1/4×[(4.85×18/5+6.15×18/5）-3.6]+[5.5-1.75×(5/3+19/21)]
= 1/4×[(4.85+6.15）×18/5-3.6]+[5.5-1.75×(35/21+19/21)]
= 1/4×[11×18/5-3.6]+[5.5-7/4×54/21]
= 1/4×[39.6-3.6]+[5.5-4.5]
= 1/4×36+1
=9+1
=10
= 1/4×[(4.85×18/5+6.15×18/5）-3.6]+[5.5-1.75×(5/3+19/21)]
= 1/4×[(4.85+6.15）×18/5-3.6]+[5.5-1.75×(35/21+19/21)]
= 1/4×[11×18/5-3.6]+[5.5-7/4×54/21]
= 1/4×[39.6-3.6]+[5.5-4.5]
= 1/4×36+1
=9+1
=10
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