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Aflati numerele a,b si c stiind ca: a+b+c=70, a+b=47, a+c=60.

Răspuns :

70-60=10(b) A+10= 47 A=47-10 A=37 37+c=60 C=60-37 C=27
70-60=10(b) A+10= 47 A=47-10 A=37 37+c=60 C=60-37 C=27