1997 * 1996 - 1
________________
1995 * 1997 +1996
a,1997 x 1996 - 1
----------------------------
1995 x 1997 + 1996
b,1997 x 1996 - 995
-----------------------------------------
1995 x 1997 + 1002
giúp em với ạ
a) \(\dfrac{1997x1996-1}{1995x1997+1996}=\dfrac{1997x\left(1995+1\right)-1}{1995x1997+1996}\)
\(=\dfrac{1997x1995+1997-1}{1995x1997+1996}=\dfrac{1997x1995+1996}{1995x1997+1996}=1\)
b) \(\dfrac{1997x1996-995}{1995x1997+1002}=\dfrac{1997x\left(1995+1\right)-995}{1995x1997+1002}\)
\(=\dfrac{1997x1995+1997-995}{1995x1997+1002}=\dfrac{1997x1995+1002}{1995x1997+1002}=1\)
1988*1996+1997+1995/1997*1996-1995*1996
tự làm là hạnh phúc của mỗi công dân.
=>
=>
=>
=> 995
\(\frac{1988\cdot1996+1997+1995}{1997\cdot1996-1995\cdot1996}\)
=\(\frac{1996\cdot\left(1988+2\right)}{1996\cdot\left(1997-1995\right)}\)
=\(\frac{1996\cdot1990}{1996\cdot2}\)
=\(\frac{1990}{2}\)=995
998*1996+1997*11+1985/1997*1996-1995*1996
1988×1996+1997×11+1985/1997×1996-1995×1996
9979.006009
are you going to kill us?
1998 x 1996 + 1997 + 1995
--------------------------------------
1997 x 1996 - 1995 x 1996
Mình mới giải xong, mất tiêu bài rồi KQ=1000
So sánh bt A=1996/1997+1997/1998 với B=1996+1997/1997+1998
1998×1996+1997×11+1985
1997×1996-1995×1996=?
1998 x 1996 + 1997 x 11 + 1985 : 1997 x 1996 - 1995 x 1996
1998nhan 1996 + 1997 nhan 11 + 1985 / 1997 nhan 1996 - 1995 nhan 1996
( -1997 ) . 1996 + 1/ (-1995). (-1997) +1996