(1993+1992×1994)÷(1993×1994-1)我需要简便算法,
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(1993+1992×1994)÷(1993×1994-1)我需要简便算法,
(1993+1992×1994)÷(1993×1994-1)
我需要简便算法,
(1993+1992×1994)÷(1993×1994-1)我需要简便算法,
(1993+1992×1994)÷(1993×1994-1)
=(1994-1+1992×1994)÷(1993×1994-1)
=(1993×1994-1)÷(1993×1994-1)
=1
原式=(1993^2+1993-1)/(1993*1993+1993*1-1)=1
=(1993+1993*1992+1992)/(1993*1993+1993-1)=(1993*1993+1992)/(1993*1993+1992)=1