3-3/2÷21/10-2/7简算

分类: 作业答案 • 2022-01-18 12:55:39

问题描述：

3-3/2÷21/10-2/7简算

答

3-3/2÷21/10-2/7
=3-5/7-2/7
=3-(5/7+2/7)
=3-1
=2