14\60 rút gọn phân số
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17/13= 17/13 , 14/23= 14/23 , 75/100=3/4 , 9/13=9/13 , 9/23=9/23 , 15/60=5/12
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\(\dfrac{50}{60}=\dfrac{5}{6}\)
\(\dfrac{33}{11}=3\)
\(\dfrac{16}{60}=\dfrac{4}{15}\)
\(\dfrac{42}{22}=\dfrac{21}{11}\)
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a: \(=\dfrac{6\left(12-7\right)}{60}=\dfrac{6\cdot5}{6\cdot10}=\dfrac{5}{10}=\dfrac{1}{2}\)
b: \(=\dfrac{35\cdot\left(18-1\right)}{34\cdot7}=5\cdot\dfrac{1}{2}=\dfrac{5}{2}\)
c: \(=\dfrac{42\left(1-11\right)}{21\cdot\left(-15\right)}=2\cdot\dfrac{-10}{-15}=2\cdot\dfrac{2}{3}=\dfrac{4}{3}\)
d: \(=\dfrac{2^5\cdot3^2}{2^5\cdot3^3}=\dfrac{1}{3}\)
e: \(=\dfrac{-36\cdot14}{27\left(14+7\right)}=\dfrac{-36}{27}\cdot\dfrac{14}{21}=\dfrac{-4}{3}\cdot\dfrac{2}{3}=-\dfrac{8}{9}\)
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a: 12/21=4/7=8/14
4/56=1/14
b: 12/15=4/5=24/30
6/36=1/6=5/30
15/50=3/10=9/30
c: 63/77=9/11=81/99
60/108=5/9=55/99
-18/27=-2/3=-66/99
d: -26/-156=1/6=7/42
49/-14=-7/2=-147/42
32/112=2/7=12/42
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`a)` Phân số tối giản là: \(\dfrac{2}{3};\dfrac{5}{4};\dfrac{11}{12}\)
`b)` Phân số rút gọn được là: \(\dfrac{28}{14};\dfrac{69}{54}\)
\(\dfrac{28}{14}=\dfrac{28:14}{14:14}=2\)
\(\dfrac{69}{54}=\dfrac{69:3}{54:3}=\dfrac{23}{18}\)
a, phân số tối giản là 2/3; 11/12; 5/4
b, phân số rút gọn được là 28/14=2; 69/54=16/9
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\(\dfrac{45}{60}\)=\(\dfrac{45:5}{60:5}\)=\(\dfrac{9}{12}\)
\(\dfrac{14}{60}\) = \(\dfrac{14:2}{60:2}\) = \(\dfrac{7}{30}\)
được 7/30 nhé