a, Ta có : \(1-\frac{1999}{2000}=\frac{1}{2000}\)

               \(1-\frac{2003}{2004}=\frac{1}{2004}\)

Vì \(2000< 2004\)nên \(\frac{1}{2000}>\frac{1}{2004}\)

            Bài làm

e, Ta có : \(\frac{299}{295}\)> 1 ; \(\frac{279}{295}\)< 1

nên \(\frac{299}{295}>\frac{279}{295}\)

a) \(\frac{1995}{1997}\)và \(\frac{1995}{1996}\)

Ta có : \(\frac{1995}{1996}=\frac{1995\times2}{1996\times2}=\frac{3990}{3992}\)

\(1-\frac{1995}{1997}=\frac{2}{1997};1-\frac{3990}{3992}=\frac{2}{3992}\)

Vì \(\frac{2}{1997}>\frac{2}{3992}\)nên \(\frac{1995}{1997}< \frac{3990}{3992}\)hay \(\frac{1995}{1997}< \frac{1995}{1996}\).

b) \(\frac{2016}{2017}\)và \(\frac{2017}{2018}\)

Ta có : \(1-\frac{2016}{2017}=\frac{1}{2017};1-\frac{2017}{2018}=\frac{1}{2018}\)

Vì \(\frac{1}{2017}>\frac{1}{2018}\)nên \(\frac{2016}{2017}< \frac{2017}{2018}\).

c) \(\frac{2018}{2019}\)và \(\frac{2017}{2016}\).

Vì \(\frac{2018}{2019}< 1;1< \frac{2017}{2016}\)nên \(\frac{2018}{2019}< \frac{2017}{2016}\).

~ HOK TỐT ~

a)\(\frac{1995}{1997}\)<   \(\frac{1995}{1996}\)

b)\(\frac{2016}{2017}\)<    \(\frac{2017}{2018}\)

c)\(\frac{2018}{2019}\)<     \(\frac{2017}{2016}\)

c=2004*2002+2004*2

d= 2002*2004+2002*2

vay c>d

ta có 1-1995/1996=1/1996

1-1996/1997=1/1997

vì 1/1996>1/1997

=>1995/1996<1996/1997

Ta lấy phần bù

\(1-\frac{1996}{1997}=\frac{1}{1997}\)

\(1-\frac{1995}{1996}=\frac{1}{1996}\)

\(\frac{1}{1997}< \frac{1}{1996}\)

Nhưng vì tìm phần bù nên ta đảo dấu

\(\Rightarrow\frac{1995}{1996}< \frac{1996}{1997}\)

Ta có \(1999>1995\)

\(\Rightarrow1999\times1999>1995\times1995\)

\(\Rightarrow\frac{1999\times1999}{1995\times1995}>1\)

\(\frac{1999.1999}{1995.1995}\)=....

=> nếu nhân ra bằng\(\frac{3996001}{3980025}\)thì \(\frac{3996001}{3980025}\)>1 

=> vì tử lớn hơn mẫu nên 1 <\(\frac{3996001}{3980025}\)

hok tốt

1995/1996 = 1/1996 

1996/1997 = 1/1997

1/1996  > 1/1997 nên 1995/1996 < 1996/1997

1- 1995/1996=1/1996

1-1996/1997=1/1997

1/1996>1/1997->1995/1996<1996/1997

a)37/53x23/48x535353/373737x242424/232323

=37/53x23/48x53/37x24/23

=851/2544x1272/851

=1/2