abc+abc+a+b+c=bca
de det numerele ​


Răspuns :

Răspuns:

(a×b×c)×2+a+b+c=2a+2b+2c+a+b+c=3a+3b+3c

3a+3b+3c=b×c×a

3×(a+b+c)=b×c×a