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a) \(\frac{67}{77}=1-\frac{10}{77};\frac{73}{83}=1-\frac{10}{83}\)
Vì \(\frac{10}{77}>\frac{10}{83}\) nên \(1-\frac{10}{77}
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câu1:
67/77<73/83
câu2:
456/461>123/128
câu3:
2003.2004-1/2003.2004<2004.2005-1/2004.2005
câu1:
67/77<73/83
câu2:
456/461>123/128
câu3:
2003.2004-1/2003.2004<2004.2005-1/2004.2005
k nha![](https://rs.olm.vn/images/avt/0.png?1311)
a) 12/37 < 19/54
b) 18/53 > 26/78
c) 13/79 < 34/204
d) 25/103 < 74/295
e) 58/63 < 36/55
g) 456/461 > 123/128
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TRong 2 phân số cùng tử, phân số nào có mẫu bé hơn thì lớn hơn nên :
\(\frac{1890}{1056}\frac{456}{234}\)
\(\frac{487}{124}>\frac{487}{156}\)
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a) 1965/1967 < 1973/1975
b) 199 /198 > 200 /199
c) 456/461 > 123/128
d) 11/32 > 16/49
e) 13/15 > 1333/1555
k mik nha hih
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124/129=1-5/129
456/461=1-5/461
Vì 5/129>5/461=>124/129<456/461
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Lời giải:
$=(123+123)+(456+456)+(789+789)$
$=2\times 123+2\times 456+2\times 789$
$=2\times (123+456+789)=2\times 1368=2736$
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b)\(\left(2016.1017+2017.2018\right).\left(1+\frac{1}{2}:\frac{3}{2}-\frac{4}{3}\right)\)
\(\left(2016.2017+2017.2018\right)\left(1+\frac{1}{3}-\frac{4}{3}\right)\)
\(\left(2016.2017+2017.2018\right).\left(\frac{4}{3}-\frac{4}{3}\right)\)
\(\left(2016.2017+2017.2018\right).0\)
\(=0\)
1-\(\frac{456}{461}\)=\(\frac{5}{461}\)
1-\(\frac{123}{128}\)=\(\frac{5}{128}\)
Vì : \(\frac{5}{461}\)<\(\frac{5}{128}\)nên\(\frac{456}{461}\)<\(\frac{123}{128}\)
đề bài là gì vậy bạn ??????