2727:27+99
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\(\dfrac{2727}{3131}=\dfrac{27.101}{31.101}=\dfrac{27}{31}\)
⇒\(\dfrac{27}{31}=\dfrac{2727}{3131}\)
\(\dfrac{27}{31}=\dfrac{27\times101}{31\times101}=\dfrac{2727}{3131}\)
a) Có 143/363 = 13/33
=> 13/33 = 143/363
b)Có 12/27 = 4/9
1212/2727 = 4/9
=> 12/27 = 1212/2727
a) Ta có: \(\dfrac{13}{33}=\dfrac{143}{363}\)
Mà \(\dfrac{143}{363}=\dfrac{143}{363}\)
Vậy \(\dfrac{13}{33}=\dfrac{143}{363}\)
b) Ta có: \(\dfrac{12}{27}=\dfrac{1212}{2727}\)
Mà \(\dfrac{1212}{2727}=\dfrac{1212}{2727}\)
Vậy \(\dfrac{12}{27}=\dfrac{1212}{2727}\)
\(\dfrac{143}{363}\) = \(\dfrac{143:11}{363:11}\) = \(\dfrac{13}{33}\) (đpcm)
\(\dfrac{1212}{2727}\) = \(\dfrac{1212:101}{2727:101}\) = \(\dfrac{12}{27}\) (đpcm)
\(\dfrac{13}{33}\) và \(\dfrac{143}{363}\)
\(\dfrac{13}{33}=\dfrac{13\times11}{33\times11}=\dfrac{143}{363}\)
\(\dfrac{143}{363}=\dfrac{143\times1}{363\times1}=\dfrac{143}{363}\)
\(\dfrac{1212}{2727}\) và \(\dfrac{12}{27}\)
\(\dfrac{12}{27}=\dfrac{12\times101}{27\times101}=\dfrac{1212}{2727}\)
\(\dfrac{1212}{2727}=\dfrac{1212\times1}{2727\times1}=\dfrac{1212}{2727}\)
\(\frac{27}{31}=\frac{2727}{3131}=\frac{272727}{313131}\)
\(\frac{27}{31}=\frac{27.101}{31.101}=\frac{27.10101}{31.10101}\)
\(\frac{27}{31}=\frac{27}{31}=\frac{27}{31}\)
\(\Rightarrow\frac{27}{31}=\frac{2727}{3131}=\frac{272727}{313131}\)
\(\frac{27}{31}=\frac{2727}{3131}=\frac{272727}{313131}\)
\(\frac{27}{31}=\frac{27\cdot101}{31\cdot101}=\frac{27\cdot10101}{31\cdot10101}\)
\(\Rightarrow\frac{27}{31}=\frac{2727}{3131}=\frac{272727}{313131}\)
`#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 x=5-3
x=2
b 15x+11=101
15x=101-11
15x=90
x = 90:15
x = 6
c x+2=0
x=0-2
x=-2
a ) 3+x=5
=> x = 5 - 3
=> x = 2
Vậy x = 2
b ) 5x + 1 = 2727 : 27
=> 5x + 1 = 101
=> 5x = 101 - 1
=> 5x = 100
=> x = 100 : 5
= > x = 20
Vậy x = 20
c ) /x+2/ = 0
=> x+2 = 0
=> x = 0 - 2
=> x = -2
Vậy x = -2
=101+99
=200
tick mk đi
2727:27+99
=101+99
=200
ai tick cho tớ đầu tiên thì báo tớ tớ tick lại cho!