Question

produsul obtinut in urma inmultirii sumei a 3 nr naturale consecutive cu 7 eate 798. care sunt cele 3 nr?

Answer 1

(a+b+c)x7=798
b=a+1
c=a+2
(a+a+1+a+2)x7=798
(3a+3)=798:7
3a+3=114
3a=114-3
3a=111
a=111:3
a=37
b=37+1=38
c=37+2=39

Deci numerele sunt:37,38 si 39