3/4, 5/6, 2/3, 5/12, 3/8

\(=\dfrac{70}{105};\dfrac{42}{105};\dfrac{30}{105};\dfrac{63}{105};\dfrac{45}{105};\dfrac{75}{105}\)

\(\dfrac{30}{105}< \dfrac{42}{105}< \dfrac{45}{105}< \dfrac{63}{105}< \dfrac{70}{105}< \dfrac{75}{105}\) hay \(\dfrac{2}{7}< \dfrac{2}{5}< \dfrac{3}{7}< \dfrac{3}{5}< \dfrac{2}{3}< \dfrac{5}{7}\)

2/7

2/5

3/7

3/5

2/3

5/7

\(\dfrac{70}{105};\dfrac{42}{105};\dfrac{30}{105};\dfrac{63}{105};\dfrac{45}{105};\dfrac{75}{105}\)

\(\dfrac{30}{105}< \dfrac{42}{105}< \dfrac{45}{105}< \dfrac{63}{105}< \dfrac{70}{105}< \dfrac{75}{105}\)

Nên ta có : \(\dfrac{2}{7};\dfrac{2}{5};\dfrac{3}{7};\dfrac{3}{5};\dfrac{2}{3};\dfrac{5}{7}.\)

a: -10/8<-1

-19/19=-1

-1<-2/10<0

0<5/12<1<17/15

=>17/15>1>5/12>-2/10>-19/19>-10/8

b: -1/3=-4/12; -5/12=-5/12; -3/4=-9/12; -1/4=-3/12; -7/12=-7/12

=>-3/4<-7/12<-5/12<-1/3<-1/4

Theo thứ tự từ lớn đến bé:\(\dfrac{17}{15};1;\dfrac{5}{12};0;\dfrac{2}{-10};-\dfrac{19}{19};-\dfrac{10}{8}\)

Theo thứ tự từ bé đến lớn : \(-\dfrac{3}{4};-\dfrac{7}{12};-\dfrac{5}{12};-\dfrac{1}{3};\dfrac{1}{-4}\)

hình như là tổng tỉ đấy,

giải giúp mình mình cần gấp!!!

=> 5/6; 4/5; 2/3; 7/12; 1/2

                                1/2    ; 4/5    ; 2/3   ; 5/6     ; 7/12

Khi quy đồng ta có: 30/60; 48/60; 40/60; 50/60; 35/60

Ta có:
\(\dfrac{6}{5}=\dfrac{6\times168}{5\times168}=\dfrac{1008}{840}\)     ;    \(\dfrac{3}{4}=\dfrac{3\times210}{4\times210}=\dfrac{630}{840}\)     ;     \(\dfrac{9}{8}=\dfrac{9\times105}{8\times105}=\dfrac{945}{840}\) 

\(\dfrac{1}{7}=\dfrac{1\times120}{7\times120}=\dfrac{120}{840}\)     ;    \(\dfrac{2}{3}=\dfrac{2\times280}{3\times280}=\dfrac{560}{840}\)

⇒ \(\dfrac{120}{840}< \dfrac{560}{840}< \dfrac{630}{840}< \dfrac{945}{840}< \dfrac{1008}{840}\) ⇒ \(\dfrac{1}{7}< \dfrac{2}{3}< \)\(\dfrac{3}{4}< \dfrac{9}{8}< \dfrac{6}{5}\)
 

2/3 , 3/4 , 6/5 , 9/8 , 1/7 . 

2/3 , 3/4 , 6/5 , 9/8 , 1/7 .

Không cần trả lời chi tiết đâu

\(\frac{3}{4}< \frac{3}{2}< \frac{5}{3}< \frac{5}{2}< \frac{6}{1}< \frac{29}{4}\)

thanks