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1.Afla numerele a,b,c care indeplinesc simultan conditiile:
a-b-c=164; a-c284; b+c=206.
Ajutati-ma urgent va rog. :-)


Răspuns :

Inlocuim a-c=284 in a-b-c=164 si obtinem 284-b=164...b=284-164....b=120 de aici rezulta ca b+c=120+c=206....c=206-120...c=86. Daca introducem b si c in formula a-b-c=164 obtinem a-120-86=164...a-206=164...a=164+206...a=370