Question 981725
{{{N-2}}},{{{N}}}, and {{{N+2}}} are the integers.
{{{N-2+N+N+2=2(N-2)-12}}}
{{{3N=2N-4-12}}}
{{{3N=2N-16}}}
{{{N=-16}}} 
So the integers are -18,-16, and -14.