x+4/2012+x+3/2013=x+2/2014+x+1/2015
(x+4)/2011+(x+3)/2012=(x+2)/2013+(x+1)/2014.tìm x
Tìm x, biết: (x+4)/2012+(x+3)/2013=(x+2)/2014+(x+1)/2015
x-1/2012+x-2/2013 +x-3/2014=x-4/2015+x-5/2016+x-6/2017
tìm x biết (1/2 + 1/3 + 1/4 + .... + 1/2014 ) . x = 2013/1 + 2012/2 + ...+ 1/2013
Tim x biet x-1/2015 + x-2/2014= x-3/2013 + x-4/2012
x+5/2012+x+4/2013+x+3/2014=x+2/2015+x+1/2016+x/2017
Tìm x biết a |3-2x|=x+1
b (1/2+1/3+...+1/2014)×x=2013/1+2012/2+...+2/2012+1/2013
(1/2+1/3+1/4+....1/2014).x=2013/1+2012/2+...+2/2012+1/2013 tim x
ai lam dc minh cho 3 kich
thank cac ban