5×[6.8-(1.6+3.6÷0.9)]÷84.

问题描述:

5×[6.8-(1.6+3.6÷0.9)]÷84.
1个回答 分类:数学 2014-11-23

问题解答:

我来补答
5×[6.8-(1.6+3.6÷0.9)]÷84,
=5×[6.8-(1.6+4)]÷84,
=5×[6.8-5.6]÷84,
=5×1.2÷84,
=6÷84,
=
1
14.
 
 
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