简便方法计算:5/7×16.31-2.31÷7/5

来源:学生学帮网 编辑:学帮网 时间:2024/07/04 05:26:49

简便方法计算:5/7×16.31-2.31÷7/5

=5/7×16.31-2.31×5/7
=5/7×(16.31-2.31)
=5/7×14
=5×2
=10