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Afla suma celor 3 nr consecutive stiind ca ultimul nr este 24

Răspuns :

Fie a, b=a+1, c=a+2
c = 24 = a + 2 => a = 24-2=22
b=22+1=23
S = 22+23+24=69
a=?.
b= a+1.
c= a+2.(24).

a= 24-2=22.
b= 24-1=23.
a+b+c=?
22+23+24=69.
SUCCES!