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\(\frac{72}{84}=\frac{6}{7}\) nha
HT
:)))
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Rút gọn:
\(\frac{35}{45}=\frac{35}{45}:\frac{5}{5}=\frac{7}{9}\)
HT
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\(\dfrac{90}{120}=\dfrac{30.3}{30.4}=\dfrac{3}{4}\)
\(\dfrac{15}{25}=\dfrac{5.3}{5.5}=\dfrac{3}{5}\)
\(\dfrac{18}{45}=\dfrac{9.2}{9.5}=\dfrac{2}{5}\)
\(\dfrac{36}{64}=\dfrac{4.9}{4.16}=\dfrac{9}{16}\)
\(\dfrac{32}{72}=\dfrac{8.4}{8.9}=\dfrac{4}{9}\)
\(\dfrac{84}{49}=\dfrac{7.12}{7.7}=\dfrac{12}{7}\)
\(\dfrac{90}{120}=\dfrac{3}{4};\dfrac{15}{25}=\dfrac{3}{5};\dfrac{18}{45}=\dfrac{2}{5};\dfrac{36}{64}=\dfrac{9}{16};\dfrac{32}{72}=\dfrac{4}{9};\dfrac{84}{49}=\dfrac{12}{7}\)
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`27/81=(27:27)/(81:27)=1/3`
`57/76=(57:19)/(76:19)=3/4`
`35/84=(35:7)/(84:7)=5/12`
`MSC:12`
`1/3=(1xx4)/(3xx4)=4/12`
`3/4=(3xx3)/(4xx3)=9/12`
`5/12` giữ nguyên
\(\dfrac{27}{81}=\dfrac{1}{3}\); \(\dfrac{57}{76}=\dfrac{3}{4}\); \(\dfrac{35}{84}=\dfrac{5}{12}\)
\(\dfrac{1}{3}=\dfrac{4}{12}\)
\(\dfrac{3}{4}=\dfrac{9}{12}\)
Giữa nguyên 5/12
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\(\frac{6}{9}=\frac{6:3}{9:3}=\frac{2}{3}\)
\(\frac{18}{48}=\frac{18:2}{48:2}=\frac{9}{24}\)
\(\frac{72}{84}=\frac{72:12}{84:12}=\frac{6}{7}\)
\(\frac{1212}{3939}=\frac{1212:101}{3939:101}=\frac{12}{39}\)
TL
\(\frac{6}{9}=\frac{2}{3}\)
\(\frac{18}{48}=\frac{3}{8}\)
\(\frac{72}{84}=\frac{6}{7}\)
\(\frac{1212}{3939}=\frac{4}{13}\)
nha bn\
HT
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a) 27 / 36 = 27 : 9 / 36 : 9 = 3/4
b) 72/96 = 72 : 24 / 96 : 24 = 3/4
c) 55 / 110 = 55 : 55 / 110 : 55 = 1/2
d) 88 / 99 = 88 : 11 / 99 : 11 = 8/9
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(\frac{6}{9}=\frac{6:3}{9:3}=\frac{2}{3}\)
b)\(\frac{10}{48}=\frac{10:2}{48:2}=\frac{5}{24}\)
c)\(\frac{72}{84}=\frac{72:12}{84:12}=\frac{6}{7}\)
d)\(\frac{1212}{3939}=\frac{1212:303}{3939:303}=\frac{4}{13}\)
#H
Rút gọn phân số:
\(\frac{6}{9}=\frac{6\div3}{9\div3}=\frac{2}{3}\)
\(\frac{10}{48}=\frac{10\div2}{48\div2}=\frac{5}{24}\)
\(\frac{72}{84}=\frac{72\div12}{84\div12}=\frac{6}{7}\)
\(\frac{1212}{3939}=\frac{1212\div303}{3939\div303}=\frac{4}{13}\)
\(\frac{72}{84}\)= \(\frac{6}{7}\)
6/7 nha
tk mình nha