Tìm x biết:
(1 + 1/2 + 1/3 +...+ 1/2013) . x + 2013= 2014/1+2015/2+... + 4025/2012 + 4026/2013
Tìm x biết: x-1/2015 + x/2014 + 1/503 = x-3/2013 + x/2012 + 1/1007
Tìm x biết: \(\frac{x+1}{2015}+\frac{x+2}{2014}+\frac{x+3}{2013}+\frac{x+4}{2012}\) = -4
Tìm x biết:
\(\frac{x+5}{2012}+\frac{x+4}{2013}=\frac{x+3}{2014}+\frac{x+2}{2015}\)
Tìm x: (1+1/2+1/3+...+1/2013).x+2013=2014/1+2015/2+...+4025/2012+4026/2013
Tìm x
a, x+1/2 + x+2/3 + x+3/4 + x+4/5 + ....+ x+5/6=5
b, x+1/2017 + x+2/2016 + x+3/2015 = x+4/2014 + x+5/2013 + x+6/2012
Tìm x biết
\(\left(\frac{1}{2}+\frac{1}{3}+....+\frac{1}{2014}+\frac{1}{2015}\right).x=\frac{2014}{1}+\frac{2013}{2}+\frac{2012}{3}+...+\frac{2}{2013}+\frac{1}{2014}\)
Tìm x biết: \(\frac{x+1}{2015}+\frac{x+2}{2014}+\frac{x+3}{2013}+\frac{x+4}{2012}=-4\)
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x+3/2012 + x+2/2013 = x+1/2014 + x/2015 Tim x