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a+b+c=56 a=b+2 b=c+2 aflati nr.

Răspuns :

a+b+c=c+2+2+c+2+c=56
3c+6=56
3c=56-6
3c=50
c=50/3
c=16,(6)
b=16,(6)+2=16/9+2=34/9=3,(7)