a)

\(\frac{13}{27}=\frac{13.101}{27.101}=\frac{1313}{2727}\)

=> \(\frac{13}{27}=\frac{1313}{2727}\)

b)

\(-\frac{15}{23}=-\frac{15.10101}{23.10101}=-\frac{151515}{232323}\)

=>\(-\frac{15}{23}=-\frac{151515}{232323}\)

a) \(\frac{1313}{2727}=\frac{1313:101}{2727:101}=\frac{13}{27}\)

Vậy \(\frac{13}{27}=\frac{1313}{2727}\)

b) \(-\frac{151515}{232323}=\frac{-151515:10101}{232323:10101}=-\frac{15}{23}\)

Vậy \(-\frac{15}{23}=-\frac{151515}{232323}\)

a) 123/127 = 123123/127127

Ta có 123123/127127 = 123 x 1001/127 x 1001

                              <=> 123123/ 127127 = 123 /127

Vậy 123/127 = 123123 /127127

b) 13/15 = 1313/1515 = 131313/151515

- Ta có 1313/1515 = 13 x 101 / 15 x 101 

                         <=> 1313/1515 = 13/15

- ta cũng có : 131313/151515 = 13 x 10101 / 15 x10101

                                          <=> 131313/151515 = 13/15 

Vậy 13/15 = 1313/1515 = 131313 /151515

Chúc bạn học tốt <3

123/127=123123/127127=123 x 1001/127 x 1001=123/127

13/15=1313/1515=13 x 101/15 x 101=13 x 10101/15 x 10101=13/15

ung ho nhe

\(\frac{123}{127}=\frac{123123}{127127}\Rightarrow\frac{123}{127}=\frac{123.1001}{127.1001}\Rightarrow\frac{123}{127}=\frac{123}{127}\Rightarrow\frac{123}{127}=\frac{123123}{127127}\)

\(\frac{13}{15}=\frac{1313}{1515}=\frac{131313}{151515}\Rightarrow\frac{13}{15}=\frac{13.101}{15.101}=\frac{13.10101}{15.10101}\Rightarrow\frac{13}{15}=\frac{13}{15}=\frac{13}{15}\Rightarrow\frac{13}{15}=\frac{1313}{1515}=\frac{131313}{151515}\)

a/     >

b/     <

c/      <

d/      =

a) \(\frac{325}{260}=\frac{650}{520}< \frac{650}{320}< \frac{876}{320}\)

\(\Rightarrow\frac{325}{260}< \frac{876}{320}.\)

b) \(\frac{13}{9}< \frac{24}{9}=\frac{8}{3}\)

\(\Rightarrow\frac{13}{9}< \frac{8}{3}.\)

c) Do \(18>-17;-39< 41\)

\(\Rightarrow\frac{18}{-39}>\frac{-17}{41}.\)

d) \(\frac{-151515}{232323}=\frac{\left(-15\right).10101}{23.10101}=\frac{-15}{23}\)

Mà \(\frac{-15}{25}< \frac{-15}{23}\)

\(\Rightarrow\frac{-15}{25}< \frac{-151515}{232323}.\)

a, Ta có: \(\frac{325}{260}=\frac{5}{4}=\frac{400}{320}< \frac{876}{320}\)

\(\Rightarrow\frac{325}{260}< \frac{876}{320}\)

b, Ta có: \(\frac{13}{9}< \frac{18}{9}=\frac{6}{3}< \frac{8}{3}\)

\(\Rightarrow\frac{13}{9}< \frac{8}{3}\)

d, Ta có: \(\frac{151515}{232323}=\frac{15}{23}>\frac{15}{25}\)

\(\Rightarrow\frac{-15}{25}>\frac{-151515}{232323}\)

171717/232323 = 17.10101/23.10101 = 17/23 < 19/23

Rút gọn phân số ta có:

              171717 : 10101 = 17

              232323 : 10101 = 23

Và bằng 17/23 < 19/23.

rút gọn phân số 171717/232323 = 17/23.

vì 17/23 < 19/23 .

Vậy 171717/232323 <19/23

theo mình là bằng nhau

a) \(\frac{5252}{7575}=\frac{52}{75};\frac{525252}{757575}=\frac{52}{75}\)

Vậy cả 3 phân số trên bằng nhau

b) \(\frac{1313}{1515}=\frac{13}{15};\frac{131313}{151515}=\frac{13}{15}\)

Vậy các phân số trên bằng nhau

\(\frac{52}{73}=\frac{52\cdot101}{73\cdot101}=\frac{5252}{7373}\)

\(\frac{52}{73}=\frac{52\cdot10101}{73\cdot10101}=\frac{525252}{737373}\)

\(\frac{13}{15}=\frac{13\cdot101}{15\cdot101}=\frac{1313}{1515}\)

\(\frac{13}{15}=\frac{13\cdot10101}{15\cdot10101}=\frac{131313}{151515}\)

\(\frac{52}{75}=\frac{52.101}{75.101}=\frac{5252}{7575};\frac{52}{75}=\frac{52.10101}{75.10101}=\frac{525252}{757575}\)

\(\frac{13}{15}=\frac{13.101}{15.101}=\frac{1313}{1515};\frac{13}{15}=\frac{13.10101}{15.10101}=\frac{131313}{151515}\)

\(\frac{ab}{cd}=\frac{101ab}{101cd}=\frac{abab}{cdcd};\frac{ab}{cd}=\frac{10101ab}{10101cd}=\frac{ababab}{cdcdcd}\)

ai k minh minh k lai

chia các vế với 1001 và 100001

a) \(\frac{52}{75}=\frac{52.101}{75.101}=\frac{52.10101}{75.10101}\)
Câu b,c tương tự, bạn tự làm nó sẽ thú vị hơn đấy
-Do it yourself-

Ta có: \(\frac{1212}{1313}=\frac{12x101}{13x101}=\frac{12}{13}\)

Vậy \(\frac{12}{13}=\frac{1212}{1313}\)

Ta có: 1212/1313 = 12.101/13.101= 12/13

Vì 12/13 = 12/13 nên 12/13 = 1212/1313

Vây...

hai PS đó = nhau .

k cho mình nha

a.

\(\frac{34}{48}=\frac{17}{24}=\frac{51}{72}\)                 \(\frac{1313}{1818}=\frac{13}{18}=\frac{52}{72}\)

Có : \(\frac{51}{72}< \frac{52}{72}\Rightarrow\frac{34}{48}< \frac{1313}{1818}\)

b.

\(\)