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a) Rút gọn phân số: \(\frac{14}{35}=\frac{14:7}{35:7}=\frac{2}{5};\frac{18}{45}=\frac{18:9}{45:9}=\frac{2}{5};\frac{24}{60}=\frac{24:12}{60:12}=\frac{2}{5}\)
Vậy, \(\frac{14}{35}=\frac{18}{45}=\frac{24}{60}\)
b) Rút gọn phân số: \(\frac{45}{65}=\frac{45:5}{65:5}=\frac{9}{13};\frac{48}{52}=\frac{48:4}{52:4}=\frac{12}{13};\frac{1010}{1313}=\frac{1010:101}{1313:101}=\frac{10}{13}\)
Vậy, \(\frac{45}{65}< \frac{1010}{1313}< \frac{48}{52}\)
\(\frac{14}{35}=\frac{2}{5}\);\(\frac{18}{45}=\frac{2}{5}\);\(\frac{24}{60}=\frac{2}{5}\)
\(\Leftrightarrow\frac{2}{5}=\frac{2}{5}=\frac{2}{5}\)
vậy\(\frac{14}{35}=\frac{18}{45}=\frac{24}{60}\)
b)\(\frac{45}{65}=\frac{9}{13};\frac{48}{52}=\frac{12}{13};\frac{1010}{1313}=\frac{10}{13}\)
\(\Leftrightarrow\frac{9}{13}< \frac{12}{13}>\frac{10}{13}\)
vậy \(\frac{45}{65}< \frac{48}{52}>\frac{1010}{1313}\)
Ta có : \(\frac{45}{65}=\frac{9}{13};\frac{48}{52}=\frac{12}{13};\frac{1010}{1313}=\frac{10}{13}\)
\(=>\frac{9}{13}< \frac{10}{13}< \frac{12}{13}\)
a)\(\frac{13}{14}\) b)\(\frac{23}{42}\) c)\(\frac{41}{152}\)d)\(\frac{8575}{512}\)
mình chỉ biết làm bài 1 thôi
\(\frac{169}{182}=\frac{13}{14}\)
b,\(\frac{2323}{4242}\)=\(\frac{23}{42}\)
c,\(\frac{123123}{456456}\)=\(\frac{41}{152}\)
\(\frac{35\cdot54}{16\cdot49\cdot10}=\frac{27}{112}\)
2,,\(\frac{16}{36}=\frac{4}{9}\) \(\frac{20}{45}=\frac{4}{9}\) \(\frac{28}{63}=\frac{4}{9}\)
Vậy 3 phân số này bằng nhau.
b,\(\frac{45}{65}=\frac{9}{13}\) \(\frac{48}{52}=\frac{12}{13}\) \(\frac{2121}{1313}=\frac{21}{13}\)
Vậy phân số \(\frac{2121}{1313}\) lớn nhất
a,\(\frac{16}{36}\)=\(\frac{4}{9}\) \(\frac{20}{45}\)=\(\frac{4}{9}\) \(\frac{28}{63}\)=\(\frac{4}{9}\)
suy ra: các phân số này bằng nhau
b,\(\frac{45}{65}\)=\(\frac{9}{13}\) \(\frac{48}{52}\)=\(\frac{12}{13}\) \(\frac{2121}{1313}\)=\(\frac{21}{13}\)
suy ra tự kết luận
\(\dfrac{3}{6}=\dfrac{3:3}{6:3}=\dfrac{1}{2}\\ \dfrac{18}{24}=\dfrac{18:6}{24:6}=\dfrac{3}{4}\\ \dfrac{5}{35}=\dfrac{5:5}{35:5}=\dfrac{1}{7}\\ \dfrac{40}{90}=\dfrac{40:10}{90:10}=\dfrac{4}{9}\\ \dfrac{75}{30}=\dfrac{75:15}{30:15}=\dfrac{5}{2}\)
\(\dfrac{3}{6}=\dfrac{3:3}{6:3}=\dfrac{1}{2}\\ \dfrac{18}{24}=\dfrac{18:6}{24:6}=\dfrac{3}{4}\\ \dfrac{5}{35}=\dfrac{5:5}{35:5}=\dfrac{1}{7}\\ \dfrac{40}{90}=\dfrac{40:10}{90:10}=\dfrac{4}{9}\\ \dfrac{75}{30}=\dfrac{75:15}{30:15}=\dfrac{5}{2}\)
18/24=3/4
15/35=3/7
40/56=5/7
96/36=16/6
ps 8/10=ps:4/5 và 32/40
k mik nha!^^^^^^^
\(\frac{18}{24}=\frac{3}{4}\)
\(\frac{15}{35}=\frac{3}{7}\)
\(\frac{40}{56}=\frac{5}{7}\)
\(\frac{96}{36}=\frac{8}{3}\)
Phân số bằng \(\frac{8}{10}\) là:
\(\frac{12}{15};\frac{4}{5};\frac{32}{40}\)
\(\dfrac{15}{35}=\dfrac{15:5}{35:5}=\dfrac{3}{7}\)
\(\dfrac{24}{27}=\dfrac{24:3}{27:3}=\dfrac{8}{9}\)
\(\dfrac{17}{50}\) ( phân số dã tối giản )
\(\dfrac{15}{45}=\dfrac{15:3}{45:3}=\dfrac{5}{15}=\dfrac{5:5}{15:5}=\dfrac{1}{3}\)
\(\dfrac{99}{121}=\dfrac{99:11}{121:11}=\dfrac{9}{11}\)
`24/27` chưa được rút gọn nha:'>
\(\dfrac{24}{27}=\dfrac{24:3}{27:3}=\dfrac{8}{9}\)
18/30=3/10
36/27=4/3
64/80=4/5
45/35=/9/7
ai thấy đúng thì k nha rùi mình k lại cho
\(\frac{18}{30}=\frac{18:6}{30:6}=\frac{3}{5}\)
\(\frac{36}{27}=\frac{36:9}{27:7}=\frac{4}{3}\)
\(\frac{64}{80}=\frac{64:16}{80:16}=\frac{4}{5}\)
\(\frac{45}{35}=\frac{45:5}{35:5}=\frac{9}{7}\)
a. 18/72 = 1/4
15/20 = 3/4
vì 1/4<3/4 nên 18/72<15/20
b. 24/36 = 2/3
20/50 = 2/5
2/3>2/5 nên 24/36>20/50
a, \(\dfrac{18}{72}\) = \(\dfrac{18:18}{72:18}\) = \(\dfrac{1}{4}\); \(\dfrac{15}{20}\) = \(\dfrac{3}{4}\)
Vì \(\dfrac{1}{4}\) < \(\dfrac{3}{4}\) nên \(\dfrac{18}{72}\) < \(\dfrac{15}{20}\)
b, \(\dfrac{24}{36}\) = \(\dfrac{24:12}{36:12}\) = \(\dfrac{2}{3}\); \(\dfrac{20}{50}\) = \(\dfrac{20:10}{50:10}\) = \(\dfrac{2}{5}\)
Vì \(\dfrac{2}{3}\) > \(\dfrac{2}{5}\) nên \(\dfrac{24}{36}\) > \(\dfrac{20}{50}\)