作业帮39*148/149+148*86/149+48*74/149jianbian jianbian
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/19 01:51:09
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39*148/149+148*86/149+48*74/149jianbian jianbian
39*148/149+148*86/149+48*74/149
jianbian jianbian
39*148/149+148*86/149+48*74/149jianbian jianbian
39*148/149+148*86/149+48*74/149
=39*148/149+86*148/149+24*148/149
=148/149*（39+86+24）
=148/149*149
=148
答案应该为（39*148+148*86+48*74）/149=148
39*148/149+148*86/149+48*74/149
=39*148/149+148*86/149+24*148/149
=148/149*(39+86+24)
=148/149*149
=148