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bạn ơi có thể g cho mình ko quy dong hay so sánh phan so 9/10 va 10/11
a) 12 < 13; 49 > 47 => 12/49 < 13/47
b) 64 < 73; 85 > 81 => 64/85 < 73/81
c) 19 > 17; 31 < 35 => 19/31 > 17/35
d) 67/77 = 1 - 10/77; 73/83 = 1- 10/83. Mà 10/77 > 10/83 => 67/77 < 73/83.
e) 456/461 = 1 - 5/461; 123/128 = 1 - 5/128. Mà 5/461 < 5/128 => 456/461 > 123/128.
f) 149/157 = 1 - 8/157; 449/458 = 1 - 9/458. Mà 8/157 = 16/314 > 9/458 => 149/157 < 449/458.
a, \(\frac{14}{25}=\frac{70}{125}\), \(\frac{5}{7}=\frac{70}{98}\)
Mà \(\frac{70}{125}< \frac{70}{98}\)=> \(\frac{14}{25}< \frac{5}{7}\)
b, \(\frac{13}{60}=\frac{65}{300};\frac{27}{100}=\frac{81}{300}\)
Mà \(\frac{65}{300}< \frac{81}{300}\Rightarrow\frac{13}{60}< \frac{27}{100}\)
c, \(1-\frac{2014}{2016}=\frac{2}{2016};1-\frac{998}{1000}=\frac{2}{1000}\)
Mà \(\frac{2}{2016}>\frac{2}{1000}\Rightarrow\frac{2014}{2016}>\frac{998}{1000}\)
d, \(\frac{47}{15}=\frac{329}{105},\frac{65}{21}=\frac{325}{105}\)
Mà \(\frac{329}{105}>\frac{325}{105}\Rightarrow\frac{47}{15}>\frac{65}{21}\)
e, \(\frac{3}{8}=\frac{147}{392},\frac{13}{49}=\frac{104}{392}\)
Mà \(\frac{147}{392}>\frac{104}{392}\Rightarrow\frac{3}{8}>\frac{13}{49}\)
g, \(\frac{43}{49}=\frac{215}{245},\frac{31}{35}=\frac{217}{245}\)
Mà \(\frac{215}{245}< \frac{217}{245}\Rightarrow\frac{43}{49}< \frac{31}{35}\)
f, \(\frac{43}{47}=\frac{1505}{1645},\frac{29}{35}=\frac{1363}{1645}\)
Mà \(\frac{1505}{1645}>\frac{1363}{1645}\Rightarrow\frac{43}{47}>\frac{29}{35}\)
mik làm ra kq luôn nha
a)14/25<5/7
b)13/60<27/100
c)2014/2016>998/1000
d)47/15>65/21
e)3/8>13/49
g)43/49<31/35
f)43/47>29/35
k cho mik nha
a) 13/57=13+16/57+16=29/73 ( Ghi nhớ SKG Toán 6)
-=> 13/57 < 29/73
b) 17/42 = 17-4/42-4 = 13/38
=> 17/42 > 13/38
c)7/41 = 7+6/41+6= 13/47
=> 7/41<13/47
\(a)\) Ta có :
\(\frac{51}{85}=\frac{3}{5}\)
\(\frac{58}{145}=\frac{2}{5}\)
Vì \(\frac{3}{5}>\frac{2}{5}\) nên \(\frac{51}{85}>\frac{58}{145}\)
Vậy \(\frac{51}{85}>\frac{58}{145}\)
\(b)\) Ta có :
\(\frac{69}{-230}=\frac{-3}{10}\)
\(\frac{-39}{143}=\frac{-3}{11}\)
Vì \(\frac{-3}{10}< \frac{-3}{11}\) nên \(\frac{69}{-230}< \frac{-39}{143}\)
Vậy \(\frac{69}{-230}< \frac{-39}{143}\)
\(c)\) Ta có :
\(1+\frac{-7}{41}=\frac{34}{41}\)
\(1+\frac{13}{-47}=\frac{34}{47}\)
Vì \(\frac{34}{41}>\frac{34}{47}\) nên \(1+\frac{-7}{41}>1+\frac{13}{-47}\) hay \(\frac{-7}{41}>\frac{13}{-47}\)
Vậy \(\frac{-7}{41}>\frac{13}{-47}\)
\(d)\) Ta có :
\(1-\frac{40}{49}=\frac{9}{49}\)
\(\frac{15}{21}=\frac{5}{7}=\frac{35}{49}< \frac{40}{49}\)
Vậy \(\frac{40}{49}>\frac{15}{21}\)