\(\frac{1996\times1997+1998\times3+1994}{1997\times1999-1997\times1997}\)
= \(\frac{1996\times1997+\left(1997+1\times3\right)+1994}{1997\times1999-1997\times1997}\)
= \(\frac{1996\times1998+1\times3+1994}{1997\times1999-1997\times1997}\)
= \(\frac{3990005}{1997\times1999-1997\times1997}\)
= \(\frac{3990005}{\left(1999-1997\right)\times1997}\)
= \(\frac{3990005}{3994}\)
tính nhanh : 1996*1997+1998*3+1994/1997*1999-1997*1997
1996*1997+1998*3+1994/1997*1999-1997*1997 tinh nhanh
1996 x 1997 + 1998 x 3 + 1994 / 1997 x 1999 - 1997 x 1997
(25+3*75-250) : (1999*1998*1997+1996*1995*1994) = ?
1991*1992*1993*1994*1995*1996*1997*1998*1999
1991*1992*1993*1994+1995*1996*1997*1998*1999
ket qua cua day tinh 1992*1993*1994*1994+1995*1996*1997*1998*1999
Tính nhanh
\(\dfrac{1996\cdot1997+1998\cdot3+1994}{1997\cdot1999-1997\cdot1997}\)
1991*1992*1993*1994+1995*1996*1997*1998*1999
