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a) \(\frac{1212}{1515}\):\(\frac{2727}{2525}\)
= \(\frac{1212}{1515}\)* \(\frac{2525}{2727}\)
= \(\frac{101.12}{101.15}\)* \(\frac{101.25}{101.27}\)
= \(\frac{12}{15}\). \(\frac{25}{27}\)
= \(\frac{20}{27}\)
b) ban co the viet ro hon de bai dc ko?
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Ta có:1818/2727=1818:909/2727:909=2/3
Vậy 1818/2727 của 2376 là:2736:3x2=1824
Đ/S:1824
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Ta có:
2020/2021 = 20/21 = 100/105
2727/3535 = 27/35 = 81/105
Do 100 > 81 nên 100/105 > 81/105
Vậy 2020/2021 > 2727/3535
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{1212}{1515}:\frac{2727}{2525}\)
\(=\frac{1212}{1515}x\frac{2525}{2727}\)
\(=\frac{20}{27}\)
Chúc Học tốt
\(\frac{1212}{1515}:\frac{2727}{2525}=\frac{1212}{1515}x\frac{2525}{2727}=\frac{12x101}{15x101}x\frac{25x101}{27x101}=\frac{12x25}{15x27}=\frac{3x4x5x5}{3x5x27}=\frac{4x5}{27}=\frac{20}{27}.\)
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\(=\dfrac{15}{23}\times\dfrac{69}{54}\times\dfrac{27}{15}\\ =\dfrac{3}{2}\)
10×73638+2727
= 736 380 + 2 727
= 739 107
HT
= 739107