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