[tex]n+(n+2)+(n+4)=153[/tex] -- combine like terms
[tex]3n+6=153[/tex] -- subtract 6 from both sides
[tex]3n=147[/tex] -- divide by 3
[tex]n=49[/tex]
So the numbers are 49, (49+2) and (49+4)
I.e. 49, 51, and 53
But the question only wants the smallest (i.e. the first of the consecutive odd numbers).
The smallest of the 3 consecutive odd numbers that sum to 153 is 49