Question

so sánh mà không cần tính kết quả

a,\(\frac{46}{57}\)va  \(\frac{46}{58}\)

b,\(\frac{367}{368}\)va  \(\frac{376}{377}\)

c,\(\frac{27}{26}\)va \(\frac{38}{37}\)

 

Answer 1

a, \(57< 58\Rightarrow\)\(\frac{46}{57}>\frac{46}{58}\)

b,\(1-\frac{367}{368}=\frac{1}{368}\)                      \(1-\frac{376}{377}=\frac{1}{377}\)

           Mà    \(\frac{1}{368}>\frac{1}{377}\Rightarrow1-\frac{367}{368}>1-\frac{376}{377}\)

                                            \(\Rightarrow\frac{367}{368}< \frac{376}{377}\)

c, \(\frac{27}{26}-1=\frac{1}{26}\)                            \(\frac{38}{37}-1=\frac{1}{37}\) 

             Mà\(\frac{1}{26}>\frac{1}{37}\)\(\Rightarrow\frac{27}{26}-1>\frac{38}{37}-1\)

                                           \(\Rightarrow\frac{27}{26}>\frac{38}{37}\)

 TK NHA!

Answer 2

a, \(\frac{46}{57}\)> \(\frac{46}{58}\)

b, \(\frac{367}{368}\)< \(\frac{376}{377}\)

c, \(\frac{27}{26}\)<\(\frac{38}{37}\)

Answer 3

a, Vì \(57< 58\)nên \(\frac{46}{57}>\frac{46}{58}\)

b, Ta có phần bù của \(\frac{367}{368}\)là \(\frac{1}{368}\)

phần bù của \(\frac{376}{377}\)là\(\frac{1}{377}\)

Vì \(\frac{1}{368}>\frac{1}{377}\Rightarrow\frac{376}{377}>\frac{367}{368}\)

c, Phần thùa của \(\frac{27}{26}\)là \(\frac{1}{26}\)

Phần thừa của \(\frac{38}{37}\)là \(\frac{1}{37}\)

Vì\(\frac{1}{26}>\frac{1}{38}\Rightarrow\frac{27}{26}>\frac{38}{37}\)

Answer 4

a,\(\frac{46}{57}>\frac{46}{58}\Rightarrow\frac{46}{57}>\frac{45}{58}\)

b,\(1-\frac{367}{368}=\frac{1}{368}\)va\(1-\frac{376}{377}=\frac{1}{377}\)

Vì  \(\frac{1}{368}>\frac{1}{377}\)nên  \(\frac{367}{368}< \frac{376}{377}\)

c,????????????????????????

Answer 5

a) \(\frac{46}{57}\)và \(\frac{46}{58}\)

Ta có : \(57< 58\)

\(\Rightarrow\frac{46}{57}>\frac{46}{58}\)

b) \(1-\frac{367}{368}=\frac{368}{368}-\frac{367}{368}=\frac{1}{368}\)

    \(1-\frac{376}{377}=\frac{377}{377}-\frac{376}{377}=\frac{1}{377}\)

Vì \(368< 377\)nên \(\frac{1}{368}>\frac{1}{377}\)

\(\Rightarrow\)\(\frac{367}{368}>\frac{376}{377}\)

c) \(\frac{27}{26}-1=\frac{27}{26}-\frac{26}{26}=\frac{1}{26}\)

     \(\frac{38}{37}-1=\frac{38}{37}-\frac{37}{37}=\frac{1}{37}\)

Có \(26< 37\)nên \(\frac{1}{26}>\frac{1}{37}\)

\(\Rightarrow\frac{27}{26}>\frac{38}{37}\)