分数简便运算1985+1987+1989+.1999/1986+1988+1990+.2000
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/29 07:41:04
![分数简便运算1985+1987+1989+.1999/1986+1988+1990+.2000](/uploads/image/z/66675-3-5.jpg?t=%E5%88%86%E6%95%B0%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%971985%2B1987%2B1989%2B.1999%2F1986%2B1988%2B1990%2B.2000)
x){lbZZj saghiid@@[&H"v6lԇHahS ʁ"5haL'H9LqD.cK} a4gil_\g Ov
分数简便运算1985+1987+1989+.1999/1986+1988+1990+.2000
分数简便运算1985+1987+1989+.1999/1986+1988+1990+.2000
分数简便运算1985+1987+1989+.1999/1986+1988+1990+.2000
(1985+1987+1989+.1999)/(1986+1988+1990+.2000 )
=(1985+1999)*13/2÷【(1986+2000)*13/2】
=3984/3986
=19992/1993