(2/5+1/3-7/15)*15简便算
来源：学生作业帮助网 编辑：六六作业网 时间：2024/07/11 15:59:33
(2/5+1/3-7/15)*15简便算(2/5+1/3-7/15)*15简便算(2/5+1/3-7/15)*15简便算(2/5+1/3-7/15)*15=2*3+1*5-7乘入15=6+5-7=11
(2/5+1/3-7/15)*15简便算
(2/5+1/3-7/15)*15
简便算
(2/5+1/3-7/15)*15简便算
(2/5+1/3-7/15)*15
=2*3+1*5-7 乘入15
=6+5-7
=11-7
=4
(2/5+1/3-7/15)*15
=2/5*15+1/3*15-7/15*15
=6+5-7
=4