数学简便计算-32x4/3x3/2=?10/9X6/5x5/4=?7/3x14x9/2=?18/25x15/4x20/9

来源：学生作业帮编辑：拍题作业网作业帮分类：数学作业时间：2024/06/12 01:43:23

数学简便计算-32x4/3x3/2=?10/9X6/5x5/4=?7/3x14x9/2=?18/25x15/4x20/9=?

-32x4/3x3/2
=-32x(4/3x3/2)
=-32x2
=-64
10/9X6/5x5/4
=10/9x(6/5x5/4)
=10/9x3/2
=5/3
7/3x14x9/2
=(7/3x9/2)x14
=21/2x14
=147
18/25x15/4x20/9
=(18/25x20/9)x15/4
=8/5x15/4
=6
再问：简便吗
再答：非常简便
再问：怎么都是加起来的啊
再答：保证全部用的是乘

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