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
tìm x, y
|x-y-5|+2013.(y-3)2014= 0
Tìm x biết:
x+1/2014 + x+2/2013 + x+3/2012 + x+4/2011 + 4=0
x=
Tìm x , biết : (1+1/2+1/3+...+1/2013).x+2013=2014/1+2015/2+...+4026/2013
tìm x: (1/2+..+1/2014).x =1/2013+1/2012+........+2012/2+2013/1
2014.|x-12|+(x-12)^2=2013.|12-x| . Tìm x
|x-2013|2013+|x-2014|2014
tìm x
Tìm x biết : |x+2013| + |x+2014| + |x+2015| = 2
Bài 1 :Tìm x , biết .
(1+1/2+1/3+...+1/2013).x+2013=2014/1+2015/2+...+4026/2013
