-3/7

56/3

3/5

-3/7

4/3

\(\dfrac{105}{173}=\dfrac{3}{5};-\dfrac{151515}{353535}=-\dfrac{3}{7}\)

\(\dfrac{616}{462}=\dfrac{4}{3}\)

\(\frac{151515}{353535}=\frac{151515\div10101}{353535\div10101}=\frac{15}{35}\)

Rút gọn là \(\frac{3}{7}\)nhé 

5/7  nha bạn

tích cho em

`111111/131313=(111111:10101)/(131313:10101)=11/13`

11/13

\(\dfrac{111111}{131313}\) = \(\dfrac{111111}{131313}\): \(\dfrac{101}{101}\) = \(\dfrac{11}{13}\)

\(\dfrac{11}{13}\) không chia hết cho số nào khác trừ số 1.

151515/131313 = 15/13

\(\frac{252525}{151515}\)\(=\)\(\frac{5}{3}\)

mình cảm ơn

\(\dfrac{252525}{151515}=\dfrac{5}{3}\)

a, - 151515 / 232323 = -15/23

b, 1.2.3 + 2.4.6 + 4.8.12 / 1.3.5 + 2.4.6 + 4.12.20 

= 146/341

Ta có: \(\frac{111111}{151515}=\frac{11\times10101}{15\times10101}=\frac{11}{15}\); \(\frac{11022}{15030}=\frac{11\times1002}{15\times1002}=\frac{11}{15}\)

Vậy \(\frac{111111}{151515}=\frac{11022}{15030}=\frac{11}{15}\)

\(\frac{111111}{151515}và\frac{11022}{15030}\)

\(\frac{111111}{151515}=\frac{11x10101}{15x10101}=\frac{11}{15}\)

\(\frac{11022}{15030}=\frac{11022:1002}{15030:1002}=\frac{11}{15}\)

Vậy hai phân số bằngnhau

So sánh phân số :

        \(\frac{111111}{151515}và\frac{11022}{15030}\)

Ta có : \(\frac{111111}{151515}=\frac{11\times10101}{15\times10101}=\frac{11}{15}\); \(\frac{11022}{15030}=\frac{11\times1002}{15\times1002}=\frac{11}{15}\)

Mà \(\frac{11}{15}=\frac{11}{15}\)

\(\Rightarrow\frac{11111}{151515}=\frac{11022}{15030}\)

\(\frac{222}{333}=\frac{2\times111}{3\times111}=\frac{2}{3}=\frac{2\times5}{3\times5}=\frac{10}{15}\)

\(\frac{131313}{151515}=\frac{13\times10101}{15\times10101}=\frac{13}{15}\)

Có \(\frac{10}{15}< \frac{13}{15}\)nên \(\frac{222}{333}< \frac{131313}{151515}\).

\(\frac{16}{18}=\frac{18-2}{16}=1-\frac{2}{16}\)

\(\frac{72}{73}=\frac{73-1}{73}=1-\frac{1}{73}>1-\frac{2}{73}>1-\frac{2}{16}\)

Suy ra \(\frac{72}{73}>\frac{16}{18}\).

111111/171717 = 11/17

11/17

\(\frac{111111}{171717}\)=\(\frac{11}{17}\)

k nha