ta có: \(\frac{31+32+35}{34}=\frac{31}{34}+\frac{32}{34}+\frac{35}{34}.\)

mà \(\frac{31}{32}>\frac{31}{34};\frac{32}{33}>\frac{32}{34}\)

\(\Rightarrow\frac{31}{32}+\frac{32}{33}+\frac{35}{34}>\frac{31}{34}+\frac{32}{34}+\frac{35}{34}=\frac{31+32+35}{34}\)

A = 35.53-18

=(34+1).53-18

=34.53+35

=> A=B

A=35.53-18

=(34+1).53-18

=34.53+53-18

=34.53+35

=>A=B

-22 /35 và -103/117

ta có 

-22/35=-2574/4094

-103/117=-3605/4094

=>-2574/4094>-3605/4094

=>-22 /35 > -103/117

\(#040510\)

\(\dfrac{-22}{35}>\dfrac{-103}{35}>\dfrac{-103}{117}\)

ta có p/s trung gian là: 34/180

Ta có: 34/35 > 34/180

          34/180 > 175/180

  => 34/35 > 175/180

cảm ơn bạn

a) <

b) >

c) >

a. Ta có:

\(\frac{33}{34}=1-\frac{1}{34}\)

\(\frac{34}{35}=1-\frac{1}{35}\)

Do \(\frac{1}{34}>\frac{1}{35}\Rightarrow1-\frac{1}{34}< 1-\frac{1}{35}\)

\(\Leftrightarrow\frac{33}{34}< \frac{34}{35}\)

\(\Rightarrow\frac{-33}{34}>\frac{-34}{35}.\)

Ta có : 

\(1-\frac{1}{34}=\frac{33}{34}\)

\(1-\frac{1}{35}=\frac{34}{35}\)

Do \(\frac{1}{34}>\frac{1}{35}\)

\(\Rightarrow1-\frac{1}{34}< 1-\frac{1}{35}\)

\(\Rightarrow\frac{33}{34}< \frac{34}{35}\)

\(\Rightarrow\frac{-33}{34}>-\frac{34}{35}\)

Vậy \(-\frac{33}{34}>-\frac{34}{35}\)

~ Ủng hộ nhé 

a, \(\sqrt{15}+\sqrt{8}< \sqrt{16}+\sqrt{9}=4+3=7\)

\(\Rightarrow\sqrt{15}+\sqrt{8}< 7\)

b, \(\sqrt{10}+\sqrt{17}+1>\sqrt{9}+\sqrt{16}+1=3+4+1=8\)

\(\sqrt{61}< \sqrt{64}=8\)

\(\Rightarrow\sqrt{10}+\sqrt{17}+1>\sqrt{61}\)

c, \(\sqrt{10}+\sqrt{5}+1>\sqrt{9}+\sqrt{4}+1=3+2+1=6\)

\(\sqrt{35}< \sqrt{36}=6\)

\(\Rightarrow\sqrt{10}+\sqrt{5}+1>\sqrt{35}\)