Ta có:

(x-1)/2000+(x+5)/2016+(x+1)/1006=4

=>(x-2001)/2000+(x-2001)/2016+(x-2001)/1006=0         (Cộng 1 vào 2 phân số đầu, cộng 2 vào phân số cuối)

=>(x-2001)*(1/2000+1/2016+1/1006)=0

=>x-2001=0    (Do 1/2000+1/2016+1/1006 khác 0)

=>x=2001

Vậy x=2001

\(\Leftrightarrow\left(\frac{x-1}{2010}-1\right)+\left(\frac{x+5}{2016}-1\right)+\left(\frac{x+1}{1006}+2-4\right)=0\)( mk nghĩ đề sai đó bạn! Đổi 2000 thành 2010)

\(\Leftrightarrow\frac{x-2011}{2010}+\frac{x-2011}{2016}+\frac{x-2011}{1006}=0\)

\(\Leftrightarrow\left(x-2011\right)\left(\frac{1}{2010}+\frac{1}{2016}+\frac{1}{1006}\right)=0\Rightarrow x-2011=0\Leftrightarrow x=2011\)

Bạn có thể cho mình biết bài này bạn lấy ở đâu không? Để mk biết đề sai hay đúng nhé. Do mk thấy phần đề không hợp lí lắm
                                                          ~ Chúc bạn học tốt~

Lê Quang Quân ơi! Hình như bạn làm sai rồi 

<->(x-1)/2010 + (x+5)/2016 + (x+1)/1006 - 4=0

<-> (x-1)/2010 -1 + (x+5)/2016 -1  + (x+1)/1006 -2=0

<-> (x-2011)/2010 + (x-2011)/2016 + (x-2011)/1006 = 0

<-> (x-2011)*(1/2010 + 1/2016 + 1/1006) = 0 

Mà 1/2010+1/2016+1/1006 khác 0

=> x-2011=0 <-> x=2011

x =2001 vì nếu nhìn kĩ hơn thì sẽ có phép tính là 1+1+2=4 và số nào -1 bằng 2010 ^_^ cộng 5 bằng 2016 và cộng 1 gấp 2 1006

1)  \(\frac{x+1}{2}+\frac{x+1}{3}+\frac{x+1}{4}=\frac{x+1}{5}+\frac{x+1}{6}\)

<=>  \(\left(x+1\right)\left(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}-\frac{1}{5}-\frac{1}{6}\right)=0\)

<=>  \(x+1=0\)  (do  1/2 + 1/3 + 1/4 - 1/5 - 1/6 khác 0)

<=>  \(x=-1\)

Vậy...

\(\frac{x+1}{2009}+\frac{x+2}{2008}+\frac{x+3}{2007}=\frac{x+10}{2000}+\frac{x+11}{1999}+\frac{x+12}{1998}\)

<=>  \(\frac{x+1}{2009}+1+\frac{x+2}{2008}+1+\frac{x+3}{2007}+1=\frac{x+10}{2000}+1+\frac{x+11}{1999}+1+\frac{x+12}{1998}+1\)

<=>  \(\frac{x+2010}{2009}+\frac{x+2010}{2008}+\frac{x+2010}{2007}=\frac{x+2010}{2000}+\frac{x+2010}{1999}+\frac{x+2010}{1998}\)

<=>  \(\left(x+2010\right)\left(\frac{1}{2009}+\frac{1}{2008}+\frac{1}{2007}-\frac{1}{2000}-\frac{1}{1999}-\frac{1}{1998}\right)=0\)

<=>  \(x+2010=0\)  (do  1/2009 + 1/2008 + 1/2007 - 1/2000 - 1/1999 - 1/1998 khác 0)

<=>  \(x=-2010\)

Vậy....

\(3.\)

\(\frac{x-1}{2011}+\frac{x-2}{2010}+\frac{x-3}{2009}=\frac{x-4}{2008}\)

\(\Rightarrow\)\(\frac{x-1}{2011}-1+\frac{x-2}{2010}-1+\frac{x-3}{2009}-1-\frac{x-4}{2008}+1+2=0\)

\(\Rightarrow\)\(\frac{x-1}{2011}-\frac{2011}{2011}+\frac{x-2}{2010}-\frac{2010}{2010}+\frac{x-3}{2009}-\frac{2009}{2009}-\frac{x-4}{2008}+\frac{2008}{2008}=0\)

\(\Rightarrow\)\(\frac{x-2012}{2011}+\frac{x-2012}{2010}+\frac{x-2012}{2009}-\frac{x-2012}{2008}=0\)

\(\Rightarrow\)\(x-2012\left(\frac{1}{2011}+\frac{1}{2010}+\frac{1}{2009}+\frac{1}{2008}\right)=0\)

\(\Rightarrow\)\(x=2012\)

d) \(\frac{x+1}{2009}+\frac{x+2}{2008}+\frac{x+3}{2007}=\frac{x+10}{2000}+\frac{x+11}{1999}+\frac{x+12}{1998}\)

<=> \(\frac{x+1}{2009}+\frac{x+2}{2008}+\frac{x+3}{2007}-\frac{x+10}{2000}-\frac{x+11}{1999}-\frac{x+12}{1998}=0\)

<=> \(\left(\frac{x+1}{2009}+1\right)+\left(\frac{x+2}{2008}+1\right)+\left(\frac{x+3}{2007}+1\right)-\left(\frac{x+10}{2000}+1\right)-\left(\frac{x+11}{1999}+1\right)-\left(\frac{x+12}{1998}+1=0\right)\)

<=> \(\frac{x+2010}{2009}+\frac{x+2010}{2008}+\frac{x+2010}{2007}-\frac{x+2010}{2000}-\frac{x+2010}{1999}-\frac{x+2010}{1998}=0\)

<=>\(\left(x+2010\right).\left(\frac{1}{2009}+\frac{1}{2008}+\frac{1}{2007}-\frac{1}{2000}-\frac{1}{1999}-\frac{1}{1998}\right)=0\)

<=> x+2010 = 0 vì \(\frac{1}{2009}+\frac{1}{2008}+\frac{1}{2007}-\frac{1}{2000}-\frac{1}{1999}-\frac{1}{1998}\ne0\)

<=> x = -2010

helpppppppppppppppp

Bài làm:

Pt <=> \(\left(\frac{x-1}{2020}-1\right)+\left(\frac{x-3}{2018}-1\right)+\left(\frac{x-5}{2016}-1\right)+\left(\frac{x-7}{2014}-1\right)=4-4\)

\(\Leftrightarrow\frac{x-2021}{2020}+\frac{x-2021}{2018}+\frac{x-2021}{2016}+\frac{x-2021}{2014}=0\)

\(\Rightarrow x-2021=0\Rightarrow x=2021\)

Ta có :\(\frac{x-1}{2020}+\frac{x-3}{2018}+\frac{x-5}{2016}+\frac{x-7}{2014}=4\)

=> \(\left(\frac{x-1}{2020}-1\right)+\left(\frac{x-3}{2018}-1\right)+\left(\frac{x-5}{2016}-1\right)+\left(\frac{x-7}{2014}-1\right)=0\)

=> \(\frac{x-2021}{2020}+\frac{x-2021}{2018}+\frac{x-2021}{2016}+\frac{x-2021}{2014}=0\)

=> \(\left(x-2021\right)\left(\frac{1}{2020}+\frac{1}{2018}+\frac{1}{2016}+\frac{1}{2014}\right)=0\)

Vì \(\frac{1}{2020}+\frac{1}{2018}+\frac{1}{2016}+\frac{1}{2014}\ne0\)

=> x - 2021 = 0

=> x = 2021

Vậy x = 2021

Tại sao lại =0??

sai đề rồi

( Câu trả lời bằng hình ảnh )

Tham khảo:

b) \(\frac{x+4}{2000}+\frac{x+3}{2001}=\frac{x+2}{2002}+\frac{x+1}{2003}\)

\(\Leftrightarrow\left(\frac{x+4}{2000}+1\right)+\left(\frac{x+3}{2001}+1\right)=\left(\frac{x+2}{2002}+1\right)+\left(\frac{x+1}{2003}+1\right)\)

\(\Leftrightarrow\frac{x+2004}{2000}+\frac{x+2004}{2001}=\frac{x+2004}{2002}+\frac{x+2004}{2003}\)

\(\Leftrightarrow\frac{x+2004}{2000}+\frac{x+2004}{2001}-\frac{x+2004}{2002}-\frac{x+2004}{2003}=0\)

\(\Leftrightarrow\left(x+2004\right).\left(\frac{1}{2000}+\frac{1}{2001}-\frac{1}{2002}-\frac{1}{2003}\right)=0\)

\(\Leftrightarrow x+2004=0\)

\(\Leftrightarrow x=0-2004\)

\(\Rightarrow x=-2004\)

Vậy \(x=-2004.\)

Chúc bạn học tốt!