Question

A+B=300 B+C=500 A+C=400 Afla numerele A.B.C si explica

Answer 1

A+B=300
A=300-B
A+C=400 INLOCUIM =>300-B+C=400=>-B+C=100 SI STIM CA B+C=500 DE AICI SE FACE SISTEM
2C=600 =>
C=300
INLOCUIM IN A+C=400 =>A+300=400=>A=100
A+B=300 => 100+B=300 => B=200