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suma a 3 nr consecutive este 63 .Aflati numerele


Răspuns :

a+a+1+a+2=63
3a=63-3
a=60:3
a=20
20+1=21
20+2=22
nr sunt 20,21,22
a+b+c+=63
63-3=60
60:3=20 (a)
20+1=21 (b)
20+2=22(c)