Velocity is speed. It doesn't matter what direction.
Subtract 8 from both sides
So you end up with x = -23
Even
means ends with 0,2,4,6,8
adds to 10
the last number cannot be 0 because the first cannot be add to 10
it can be
8xx2
6xx4
4xx6
8xx2
where x is any whole number you want