39(148/149)+148(74/149)=?

来源：学生作业帮助网编辑：作业帮时间：2024/05/12 00:55:58

39*(148/149)+148*(74/149)=?
39*(148/149)+148*(74/149)=?

39*(148/149)+148*(74/149)=?
原式=39*(148/149)+74*(148/149)=113*(148/149)=113-113/149=16724/149
即112又36/149