Răspuns :

Răspuns:

a+b+b+c+a+c=600+900+700

2a+2b+2c=2200

2(a+b+c)=2200

a+b+c=2200:2=1100

600+c=1100=>c=1100-600=>c=500

a+900=1100=>a=1100-900=>a=200

700+b=1100=>b=400