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(x-3)/1+(x-3)/2+...+(x-3)/2014=0

x=?


Răspuns :

(x-3)/1+(x-3)/2+...+(x-3)/2014=0

(x-3)(1+1/2+...+1/2014)=0

1+1/2+...+1/2014≠0

x-3=0⇒x=3

Bafta!