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1) \(\frac{9}{2}>\frac{9}{6}\)
2) \(\frac{4}{3}< \frac{9}{3}\)
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Ta có:
M=33669:(9×3)=33669:9:3=3741:3=1247
N=33669:9+3=3741+3=3744.
Mà 1247 < 3744
Do đó: 336699:(9×3) < 336699:9+3.
Hay M < N.
Đáp án A
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\(\left(\frac{9}{2}-\frac{5}{2}\right)-\frac{3}{4}=\frac{4}{2}-\frac{3}{4}=\frac{8}{4}-\frac{3}{4}=\frac{5}{4}\)\(\frac{5}{4}\)
\(\frac{9}{2}-\left(\frac{5}{2}+\frac{3}{4}\right)=\frac{9}{2}-\left(\frac{10}{4}+\frac{3}{4}\right)=\frac{9}{2}-\frac{13}{4}=\frac{18}{4}-\frac{13}{4}=\frac{5}{4}\)
Vậy : \(\left(\frac{9}{2}-\frac{5}{2}\right)-\frac{3}{4}=\frac{9}{2}-\left(\frac{5}{2}+\frac{3}{4}\right)\)
tk mk nha
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17/9 và 29/21
ta có:
17/9 = 119/63
29/21=87/63
vì 119/63 > 87/63 nên 17/9 > 29/21
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\(\frac{7}{9}=\frac{7}{9};\frac{2}{3}=\frac{6}{9}\)
\(\Rightarrow\frac{7}{9}>\frac{2}{3}\)
\(\frac{4}{7}=\frac{20}{35};\frac{2}{5}=\frac{14}{35}\)
\(\Rightarrow\frac{4}{7}>\frac{2}{5}\)
92 < 29
92< 29