Question

Care  numere de forma abc,cu b=3,indeplinesc conditiile ;abc-cba=297?

Answer 1

100a+10b+c-100c-10b-a=297
100(a-c)-(a-c)=297
(100-1)(a-c)=297
99(a-c)=297
a-c=297:99=3
a=c+3
a=3,b=3.c=0,330
c=1,b=3,a=4,431
c=2,b=3,a=5,532
c=3,b=3,a=6,633
c=4,b=3,a=7,734
c=5,b=3,a=8,835
c=6,b=3,a=9,936