=5/6

lucy ngoc tk mk nha

phân số rút gọn là 5/6 

100/120 = 20/24 = 5/6 kick mình nha

100/120=10/12=5/6

k mk nha

\(M=\frac{2.6.10+4.12.20+6.18.30+...+20.60.100}{1.2.3+2.4.6+3.6.9+...+10.20.30}\)

\(=\frac{2.6.10.\left(1+2+3+...+10\right)}{1.2.3.\left(1+2+3+...+10\right)}\)

\(=20\)

Phân số đã cho chưa tối giản vì ƯCLN(16,10) = 2 

\(\frac{{16}}{{10}} = \frac{{16:2}}{{10:2}} = \frac{8}{5}\).

Gọi phân số cần tìm là a/b

Ta có

\(\frac{a}{b}=\frac{3}{4}\)

\(\frac{a+60}{b}=\frac{9}{10}\)

\=>\(\frac{a}{b}+\frac{60}{b}=\frac{9}{10}\)

=>\(\frac{3}{4}+\frac{60}{b}=\frac{9}{10}\)

\(\frac{60}{b}=\frac{9}{10}-\frac{3}{4}=\frac{3}{20}=\frac{60}{400}\)

=>b=400 , a=300

Thanks so much

\(\frac{36}{10}=\frac{36:2}{10:2}=\frac{18}{5}\)

\(\frac{75}{36}=\frac{75:3}{36:3}=\frac{25}{12}\)

\(\frac{75}{300}=\frac{75:75}{300:75}=\frac{1}{4}\)

\(\frac{4}{100}=\frac{4:4}{100:4}=\frac{1}{25}\)

36/10=18/5

75/36=25/12

75/300=1/4

4/100=1/25

36/10 =18/5

75/36=75/36

75/300=15/60

4/100=1/25

k chị nha!

`6/10=3/5`

`70/9=70/9`

`96/72=4/3`

`45/35=9/7`

`24/36=2/3`

`25/100=1/4`

$6/10=(6:2)/(10:2)=3/5$

$70/9$ ( tối giản)

$96/72=(96:24)/972:24)=4/3$

$45/35=(45:5)/(35:5)=9/7$

$24/36=(24:12)/(36:12)=2/3$

$25/100=(25:25)/(100:25)=1/4$

\(=\frac{1}{2}\)

1/2 thế mà ko biết làm

1/2 dễ mờ

5/10= 1/2

12/36=1/3

9/72=1/8

\(\dfrac{5}{10}=\dfrac{1}{2}\);\(\dfrac{12}{36}=\dfrac{1}{3}\);\(\dfrac{9}{72}=\dfrac{1}{8}\);\(\dfrac{75}{300}=\dfrac{1}{4}\);\(\dfrac{15}{35}=\dfrac{3}{7}\);\(\dfrac{4}{100}=\dfrac{1}{25}\)

1/2   1/3  1/8
rồi anh rút gọn rồi

\(\frac{48}{96}=\frac{48:48}{96:48}=\frac{1}{2}\)

\(\frac{42}{98}=\frac{42:14}{98:14}=\frac{3}{7}\)

\(\frac{80}{240}=\frac{80:80}{240:80}=\frac{1}{3}\)

\(\frac{75}{100}=\frac{75:25}{100:25}=\frac{3}{4}\)

\(\frac{64}{720}=\frac{64:16}{720:16}=\frac{4}{45}\)

\(\frac{15}{120}=\frac{15:15}{120:15}=\frac{1}{8}\)

48/96=1/2

42/98=3/7

80/240=1/3

75/100=3/4

64/720=4/45

15/120=1/8

48/96=1/2

42/98=3/7

80/240=1/3

75/100=3/4

64/720=4/45

15/120=1/8