3+1949*(1/43-1/1992)+43*(1/1949-1/1992)-1992*(1/1949+1/43)简算
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3+1949*(1/43-1/1992)+43*(1/1949-1/1992)-1992*(1/1949+1/43)简算
3 + 1949/43 - 1949/1992 + 43/1949 - 43/1992 - 1992/1949 -1992/43
=3 + (1949/43 - 1992/43) + (-1949/1992 - 43/1992) + (43/1949 - 1992/1949)
= 3 - 43/43 - 1992/1992 - 1949/1949
= 3 - 1 - 1 - 1
= 0
=3 + (1949/43 - 1992/43) + (-1949/1992 - 43/1992) + (43/1949 - 1992/1949)
= 3 - 43/43 - 1992/1992 - 1949/1949
= 3 - 1 - 1 - 1
= 0
1、1949×(四十三分之一减1992分之1)+(1949分之1减1992分之1)减1992×(1949分之1加43分之
1991*1992*1993*1994+1-(1992*1992+1991)*(1992*1992+1991)
1949*(1/50-1/2000)+51*(1/1949-1/2000)-2000*(1/1949+1/51)+3
1994 1/1992×1992/1993
1949x(1/51-1/2000)+51x(1/1949-1/2000)-2000X(1/1949+1/51)+3
1949×(1/51-1/2000)+51×(1949-1/2000)-2000×(1/1949+1/51)+3
37×(1/80+1/43)-43×(1/37-1/80)+80×(1/37-1/43)简便计算
(1993*1994-1)/(1993+1992*1994)
(1993*1994-1)/1993+1992*1994等于多少?
1949*(1/51-1/2000)+51*(1/1949-1/2000)-2000*(1/1949+1/51)
1949*(1/51-1/2000)+51*(1/1949-1/2000)=2000*(1/51-1/1949)
1/2012-1)(1/2011-1)(1/2010-1)...(1/1949-1)=?