Tìm x biết :
a. x-1/2015+x-2/2014=x-3/2013+x-4/2012
b.x-1/2004+x-2/2003-x-3/2002=x-4/2001
d.|5x-3|> hoặc = 7
Những câu hỏi liên quan
Tìm x biết: (x-1/2004)+(x-2/2003)-(x-3/2002)=x-4/2001
\(\left(x-\frac{1}{2004}\right)+\left(x-\frac{2}{2003}\right)-\left(x-\frac{3}{2002}\right)=x-\frac{4}{2001}\)
\(x-\frac{1}{2004}+x-\frac{2}{2003}-x+\frac{3}{2002}-x=-\frac{4}{2001}\)
\(x+x-x-x-\frac{1}{2004}-\frac{2}{2003}+\frac{3}{2002}=-\frac{4}{2001}\)
\(0x-\frac{1}{2004}-\frac{2}{2003}+\frac{3}{2002}=-\frac{4}{2001}\)
\(\Rightarrow\) Vô lý
Vậy \(x\in\phi\)
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Tìm x biết, x-1/2004 + x-2/ 2003 - x-3/ 2002 = x-4/ 2001
Tìm x biết, x-1/2004 + x-2/ 2003 - x-3/ 2002 = x-4/ 2001
Tìm x biết: (x-1 / 2004)+(x-2 / 2003)-(x-3 / 2002)=x-4 / 2001
Tìm x biết:
a)(x-5)x+2014-(x-5)x+2015
b)\(\frac{x-1}{2014}+\frac{x-2}{2013}+\frac{x-3}{2012}=\frac{x-10}{2005}+\frac{x-11}{2004}+\frac{x-12}{2003}\)
a) (x-5)x+2015 - (x-5)x+2014 =0
(x-5)x+2014(x-5 -1) =0
+ x -5 =0 => x =5
+ x -6 =0 => x =6
Vậy x = 5 hoặc x =6
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Tìm x biết Ax + B = C
A = 158 x 12 - 12/7 - 12/289 -12/85 // 4 - 4/7 - 4/289 - 4/85 : 1/6 x 505505505 / 711711711 - 2005
B = 2003 x [2004 ^2003 + 2004^2002 + ..... + 2004 + 1] - 2004^2004 - 5
C= 2003 x 1986 + 2002 x 17 + 2020 / 2003 x 2004 - 2003 ^2
jup mik nhe
1. tìm x biết :
x+4/2001+x+3/2002=-x+2/2003+x+1/2004
x+4/2001+x+3/2002=-x+2/2003+x+1/2004
x=...
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\(\frac{x+4}{2001}+\frac{x+3}{2002}=\frac{x+2}{2003}+\frac{x+1}{2004}\)
\(\Leftrightarrow\left(\frac{x+4}{2001}+1\right)+\left(\frac{x+3}{2002}+1\right)=\left(\frac{x+2}{2003}+1\right)+\left(\frac{x+1}{2004}+1\right)\)
\(\Leftrightarrow\frac{x+2005}{2001}+\frac{x+2005}{2002}=\frac{x+2005}{2003}+\frac{x+2005}{2004}\)
\(\Leftrightarrow\frac{x+2005}{2001}+\frac{x+2005}{2002}-\frac{x+2005}{2003}-\frac{x+2005}{2004}=0\)
\(\Leftrightarrow\left(x+2005\right).\left(\frac{1}{2001}+\frac{1}{2002}+\frac{1}{2003}+\frac{1}{2004}\right)=0\)
Vì \(\left(\frac{1}{2001}+\frac{1}{2002}+\frac{1}{2003}+\frac{1}{2004}\right)\ne0\)
\(\Rightarrow x+2004=0\)
\(\Rightarrow x=0-2004=-2004\)
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Tìm x biết:
(x-1)/2004+(x+2)/2003-(x-3)/2002=(x-4)/2001
x+4/2000+1+x+3/2001+1=x+2/2002+1+x+1/2... y cho nay la cong voi 1/1 chu lkhong phai la cong 1 o duoi mau dau nhe) quy dong chuyen ve ta duoc:
x+2004/2000+x+2004/2001-x+2004/2002-x+...
(x+2004)(1/2000+1/2001-1/2002-1/2003)=...
do 1/2000+1/2001-1/2002-1/2003 luon lon hon 0 nen suy ra:
x+2004=0 suy ra x=-2004
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x+4/2000+1+x+3/2001+1=x+2/2002+1+x+1/2... y cho nay la cong voi 1/1 chu lkhong phai la cong 1 o duoi mau dau nhe) quy dong chuyen ve ta duoc:
x+2004/2000+x+2004/2001-x+2004/2002-x+...
(x+2004)(1/2000+1/2001-1/2002-1/2003)=...
do 1/2000+1/2001-1/2002-1/2003 luon lon hon 0 nen suy ra:
x+2004=0 suy ra x=-2004
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x+4/2000+1+x+3/2001+1=x+2/2002+1+x+1/2... y cho nay la cong voi 1/1 chu lkhong phai la cong 1 o duoi mau dau nhe) quy dong chuyen ve ta duoc:
x+2004/2000+x+2004/2001-x+2004/2002-x+...
(x+2004)(1/2000+1/2001-1/2002-1/2003)=...
do 1/2000+1/2001-1/2002-1/2003 luon lon hon 0 nen suy ra:
x+2004=0 suy ra x=-2004
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Tìm số hữu tỉ x biết
a) (x-3)/5=6-(1/3)+[(1/3)*x]
b)[(1/2)*x]-(1/3)-5=[3-2x+7)]/4
c) [(7x)/8]-5x+45=(10/3)*x+1/4
d) [(4-x)/2007]=(7-x/2004)-(9-x/2002)-1