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13 / 17 < 11/ 11
3 / 4 + 25 / 100 = 75 / 100 + 1 / 4
1 > 2010 / 2011
3 + 19 / 15 > 2 + 15 / 19
3 + 15 / 19 = 4 - 4 / 19
3 + 14 / 19 > 3 + 19 / 14
Thế này bạn ơi!
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Ta có:\(\frac{10}{14}< \frac{17}{x}< \frac{10}{13}\)
\(\Rightarrow\frac{170}{238}< \frac{170}{10x}< \frac{170}{221}\)
\(\Rightarrow238>10x>221\)
\(\Rightarrow10x=230\)
\(\Rightarrow x=23\)
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Vì \(\frac{13}{43}< 1;\frac{25}{11}>1\)nên \(\frac{13}{43}< \frac{25}{11}\)
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a) \(\frac{x}{8}< \frac{1}{4}=>\frac{x}{8}-\frac{1}{4}< 0=>\frac{x}{8}-\frac{2}{8}< 0\)
\(=>\frac{x-2}{8}< 0=>\orbr{\begin{cases}x-2< 0\\8>0\end{cases}}=>\orbr{\begin{cases}x< 2\\8>0\end{cases}}\)
vay \(x< 2\)
cac cau con lai lam tuong tu
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a) 12/17 + 21/25 = 657/425
b) 4 - 205/811 = 3039/811
c) 12 . 21/25 = 252/25
d) 4 : 205/811 = 205/3244
a) 12/17 + 21/25 = 657/425
b) 4 - 205/811 = 3039/811
c) 12 . 21/25 = 252/25
d) 4 : 205/811 = 205/3244
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SOS