Question

Afla nr A,B si C stiind ca ...A plus B  egal 300 , B plus C egal 500    si A plus C egal  400                                 

Answer 1

Iti spun direct care sunt:
A=100
B=200
C=300
A+B=300
100+200=300
B+C=400
200+300=500
A+C=400
100+300=400
Sper ca te-am ajutat! :)

Answer 2

A+B=300
B+C=500
A+C=400
le adunam si avem
2A+2B+2C=1200
2(A+B+C)=1200
A+B+C=1200:2
A+B+C=600

A+B=300
C=600-300
C=300
B+C=500
A=600-500
A=100
A+C=400
B=600-400
B=200

A+B=300;100+200=300
B+C=500;200+300=500
A+C=400;100+300=400