Question

DAU COROANA, VA ROG SERIOZITATE!

Answer 1

Daca media aritmetica a oricare doua numere  este cat celalat numar ,pot spune ca numerele sunt egale. 

[tex] \frac{a+b}{2} =c =\ \textgreater \ a+b=2c [/tex]
$\frac{a+c}{2} = b =\ \textgreater \ a+c =2b$
$\frac{b+c}{2} =a =\ \textgreater \ b+c=2a$

Le adunam 

2a+2b+2c=2a+2b+2c => a=b=c