计算:2/15×[﹙2/3-3/5﹚÷4/27]过程写出来,

问题描述:

计算:2/15×[﹙2/3-3/5﹚÷4/27]过程写出来,

2/15×[﹙2/3-3/5﹚÷4/27]
=2/15×[1/15÷4/27]
=2/15×1/15*27/4
=3/50