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\(\dfrac{2006.125+1000}{126.2006-1006}\)
\(=\)\(\dfrac{2006.125+1000}{(125+1).2006-1006}\)
\(=\)\(\dfrac{2006.125+1000}{125.2006+1.2006-1006}\)
\(=\)\(\dfrac{2006.125+1000}{125.2006+2006-1006}\)
\(=\)\(\dfrac{2006.125+1000}{125.2006+1000}\)
\(=\) 1
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a)A=3\(\dfrac{1}{11}\) x \(\dfrac{27}{46}\) x 1\(\dfrac{6}{17}\) x 2\(\dfrac{4}{9}\)
A=\(\dfrac{34}{11}\) x \(\dfrac{27}{46}\) x \(\dfrac{23}{17}\) x \(\dfrac{22}{9}\)
A=\(\dfrac{34\times27\times23\times22}{11\times46\times17\times9}\)
A=\(\dfrac{2\times3}{1}\)
A=6
mk cảm ơn bạn nhìu nha . bk có thể giải cho mk câu B đc ko
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Ta có :
Tử số :
( 2005 + 1 ) . 125 + 1000
2005 . 125 + 125 + 1000
2005 . 125 +1125
Mẫu Số :
( 125 + 1 ) . 2005 - 888
125 . 2005 + 2005 - 888
125 . 2005 + 1117
Ta có phân số : \(\dfrac{2005\cdot125+1125}{125\cdot2005+1117}\) = \(\dfrac{1125}{1117}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
nhầm
câu c :
=> 480 + 180 = (x + 125) : 5 + 260
=> 660 = (x + 125) : 5 + 260
=> (x + 125) : 5 = 400
=> x + 125 = 2000
=> x = 1875
câu e :
=> (x + 50) . 50 - 50 = 2500
=> (x + 50) . 50 = 2550
=> x + 50 = 51
=> x = 1
a/ = (195 - 195) : (1945 + 1014) = 0 : (1945 + 1014) = 0
b/ => x - 2005 = 0 => x = 0 + 2005 = 2005
c/ => 480 + 180 = (x + 125) : 5 + 260
=> 300 = (x + 125) : 5 + 260
=> (x + 125) : 5 = 40
=> x + 125 = 8
=> x = -117
d/ => x - 2006 = 1 => x = 2007
e/ => (x + 50) . 50 - 50 = 1
=> (x + 50) . 50 = 51
=> x + 50 = 51/50
=> x = -2449/50
![](https://rs.olm.vn/images/avt/0.png?1311)
a)(x-2005).2006=0
=>x-2005=0
=>x=2005
b)480+45.4=(x+125):5+260
=>480+180=(x+125):5+260
=>660=(x+125):5+260
=>(x+125):5=400
=>x+125=2000
=>x=1875
c)2005.(x-2006)=2005
=>x-2006=1
=>x=2007
d){(x+50).50-50}:50=50
=>(x+50).50-50=2500
=>(x+50)*50=2550
=>x+50=51
=>x=1
![](https://rs.olm.vn/images/avt/0.png?1311)
a) (x - 2005 ) . 2006 = 0
x - 2005 = 0 : 2006
x - 2005 = 0
x = 0 + 2005
x = 2005
b) 2005.(x-2006) = 2005
x - 2006 = 2005 : 2005
x - 2006 = 1
x = 1 + 2006
x = 2007
c) 480+45.4=(x+125) : 5 + 260
480 + 180 = (x+125) : 5 + 260
660 = ( x + 125 ) : 5 + 260
660 - 260 = ( x+ 125 ) : 5
400 = ( x + 125 ) : 5
400 x 5 = x + 125
2000 = x + 125
2000 - 125 = x
1875 = x
tương tự
![](https://rs.olm.vn/images/avt/0.png?1311)
2006 x 125 + 1000/126 x 2006 - 1006
= 2006 . 125 + 1000/125 . 2006 + 1 .2006 - 1006
= 2006 . 125 + 100/125 . 2006 + 1000
= 1
2006 x 125 + 1000/126 x 2006 - 1006
= 2006 x 125 + 1000/125 x 2006 + 1 x 2006 - 1006
= 2006 x 125 + 1000/125 x 2006 + 1000
= 1