1996*1997+1998*3+1994/1997*1999-1997*1997 tinh nhanh
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
1996 x 1997 + 1998 x 3 + 1994 / 1997 x 1999 - 1997 x 1997
= 1996 x 1997 + ( 1997 + 1 x 3 ) + 1994 / 1997 x 1999 - 1997 x 1997
= 1996 x 1998 + 1 x 3 + 1994 / 1997 x 1999 - 1997 x 1997
= 3988008 + 3 + 1994 / 1997 x 1999 - 1997 x 1997
= 3990005 / 1997 x 1999 - 1997 x 1997
= 3990005 / ( 1999 - 1997 ) x 1997
= 3990005 / 3994
\(\frac{1996\times1997+1998\times3+1994}{1997\times1999-1997\times1997}\)
= \(\frac{1996\times1997+\left(1997+1\times3\right)+1994}{1997\times1999-1997\times1997}\)
= \(\frac{1996\times1998+1\times3+1994}{1997\times1999-1997\times1997}\)
= \(\frac{3990005}{1997\times1999-1997\times1997}\)
= \(\frac{3990005}{\left(1999-1997\right)\times1997}\)
= \(\frac{3990005}{3994}\)
=(25+3*75-250):(1999*1998*1997*1996*1995*1994)
=(25+225-250):(1999*1998*1997*1996*1995*1994)
=(250-250):(1999*1998*1997*1996*1995*1994)
=0:(1999*1998*1997*1996*1995*1994)
=0
trả lời:
1996 x 1997 + 1998 x 3 + 1994 / 1997 x 1999 - 1997 x 1997
= 1996 x 1997 + ( 1997 + 1 x 3 ) + 1994 / 1997 x 1999 - 1997 x 1997
= 1996 x 1998 + 1 x 3 + 1994 / 1997 x 1999 - 1997 x 1997
= 3988008 + 3 + 1994 / 1997 x 1999 - 1997 x 1997
= 3990005 / 1997 x 1999 - 1997 x 1997
= 3990005 / ( 1999 - 1997 ) x 1997
= 3990005 / 3994
Bài làm:
\(\frac{1997.1996+1998.3+1944}{1994.1999-1997.1994}\)
\(=\frac{1997.1996+\left(1997+1\right).3+1994}{1994.\left(1999-1997\right)}\)
\(=\frac{1997.1996+1997.3+3+1994}{1994.2}\)
\(=\frac{1997.\left(1996+3\right)+1997}{1994.2}\)
\(=\frac{1997.\left(1999+1\right)}{1994.2}\)
\(=\frac{1997.2000}{1994.2}\)
\(=\frac{998500}{997}\)
Hc tốt!