1949*(1/51-1/2000)+51*(1/1949-1/2000)=2000*(1/51-1/1949)
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1949*(1/51-1/2000)+51*(1/1949-1/2000)=2000*(1/51-1/1949)
左右两边不相等,题目有问题.
等号是否为减号?
1949*(1/51-1/2000)+51*(1/1949-1/2000)-2000*(1/1949+1/51)
=1949/51-1949/2000+51/1949-51/2000-2000/1949-2000/51
=(1949/51-2000/51)-(1949/2000+51/2000)+(51/1949-2000/1949)
=-1-1-1
=-3
等号是否为减号?
1949*(1/51-1/2000)+51*(1/1949-1/2000)-2000*(1/1949+1/51)
=1949/51-1949/2000+51/1949-51/2000-2000/1949-2000/51
=(1949/51-2000/51)-(1949/2000+51/2000)+(51/1949-2000/1949)
=-1-1-1
=-3
1949*(1/51-1/2000)+51*(1/1949-1/2000)=2000*(1/51-1/1949)
1949*(1/51-1/2000)+51*(1/1949-1/2000)-2000*(1/1949+1/51)
1949*(1/50-1/2000)+51*(1/1949-1/2000)-2000*(1/1949+1/51)+3
1949*(1/51-1/2000)+51*(1/1949-1/2000)+3
1949x(1/51-1/2000)+51x(1/1949-1/2000)-2000X(1/1949+1/51)+3
1949x(1/51—1/2000)+51X(1/1949—1/2000)—2000X(1/1949+1/51)+3的计
1949×(1/51-1/2000)+51×(1949-1/2000)-2000×(1/1949+1/51)+3
1、1949*2003+1952*2000+1955*1997+...+2003*1949=?
用英语写出下列时间1949;1875,4;1986,9,1;2000,10,12
用英文翻译一下数字:1949,1986 9 1,1875 4,2000,10 12
1949×(151−12000)+51×(11949−12000)−2000×(11949+151)+3
october 1 1949 october 1st 1949哪个正确