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`#3107.101107`
`a)`
Ta có:
\(\dfrac{2727}{3131}=\dfrac{2727\div27}{3131\div31}=\dfrac{27}{31}\)
Vì \(\dfrac{27}{31}=\dfrac{27}{31}\)
\(\Rightarrow\dfrac{27}{31}=\dfrac{2727}{3131}\)
`b)`
Ta có:
\(\dfrac{11}{31}=1-\dfrac{20}{31}=1-\dfrac{200}{310}\)
\(\dfrac{111}{311}=1-\dfrac{200}{311}\)
Vì \(\dfrac{200}{310}>\dfrac{200}{311}\)
\(\Rightarrow1-\dfrac{200}{310}< 1-\dfrac{200}{311}\)
\(\Rightarrow\dfrac{11}{31}< \dfrac{111}{311}.\)
\(a,\dfrac{2727}{3131}=\dfrac{2727:101}{3131:101}=\dfrac{27}{31}\\ Vậy:\dfrac{27}{31}=\dfrac{2727}{3131}\)
\(\dfrac{2727}{3131}=\dfrac{27.101}{31.101}=\dfrac{27}{31}\)
⇒\(\dfrac{27}{31}=\dfrac{2727}{3131}\)
\(\dfrac{27}{31}=\dfrac{27\times101}{31\times101}=\dfrac{2727}{3131}\)
\(\frac{27}{31}=\frac{2727}{3131}=\frac{272727}{313131}\)
\(\frac{27}{31}=\frac{27.101}{31.101}=\frac{27.10101}{31.10101}\)
\(\frac{27}{31}=\frac{27}{31}=\frac{27}{31}\)
\(\Rightarrow\frac{27}{31}=\frac{2727}{3131}=\frac{272727}{313131}\)
\(\frac{27}{31}=\frac{2727}{3131}=\frac{272727}{313131}\)
\(\frac{27}{31}=\frac{27\cdot101}{31\cdot101}=\frac{27\cdot10101}{31\cdot10101}\)
\(\Rightarrow\frac{27}{31}=\frac{2727}{3131}=\frac{272727}{313131}\)
\(\frac{27}{31}=\frac{27x10101}{31x10101}=\frac{272727}{313131}\)
ta có:19/20<20/20 và 20/20<20/21
ta có:1-17/21=21/21-17/21=4/21
nên 4/21>4/27
1-23/27=27/27=4/27
ta có:31/29-1=31/29-29/29=2/29
nên 31/29>45/43
45/43-1=43/43-45/43=2/43
nhớ k mình nha
Ta có : 1131=1−2031=1−2003101131=1-2031=1-200310
111311=1−200311111311=1-200311
Vì 200310>200311200310>200311 nên 1−200310<1−2003111-200310<1-200311 hay 1131<1113111131<111311
Vậy , 1131<111311.
A: 27/31 = 2727/3131 (Chia 11 cho tử số và mẫu số thì ra 27/31)
B: 11/31 < 111/311
A: 27/31 = 2727/3131 (Chia 11 cho tử số và mẫu số thì ra 27/31)
B: 11/31 < 111/311