Tính nhanh:
\(\dfrac{1988\times1996+1997+1985}{1997\times1996-1995\times1996}\)
Tính nhanh:
\(\frac{1998\times1996+1997+1995}{1997\times1996-1995\times1996}\)
Tim A
\(A=\frac{1998\times1996+1997\times11+1985}{1997\times1996-1995\times1996}\)
a/\(\frac{1988\times1996+1997+1985}{1997\times1996-1995\times1996}\)
b/\(\frac{1978\times1979+1980.21+1985}{1980\times1979-1978\times1979}\)
c/\(\frac{2,43\times12300-24,3\times1230}{45\times20,1+55\times28,9+4,5+3,3-55\times5,37}\)
Giúp mk nha, giải ra đầy đủ thì mk sẽ like :-)))
Tính nhanh:
1988 x 1996 + 1997 + 1995
1997 x 1996 - 1995 x 1996
Tính nhanh: a) 1988*1996+1997+1985/1997*1996-1995*1996 b) 989898/454545 - 31313131/15151515
1988*1996+1997+1995/1997*1996-1995*1996
Tính nhanh
1995*1997-1/1996*1995+1994
tính nhanh
( 1997* 1996-1) : ( 1995*1997+1996)