Question 85437
You need an LCD. In this case, that'd be 2(y + 3) [put the 2y + 6 in factored form to make it easier.] Now, adjust the numerators accordingly:

{{{y - 2/y - 3}}} = {{{2(y - 2)/2(y - 3)}}}
{{{y/2(y - 3)}}} stays the same ; no adjustmnt necessary.
{{{2(y - 2)/2(y - 3)}}} - {{{y/2(y - 3)}}} =
{{{2y - 4/2(y - 3)}}} - {{{y/2(y - 3)}}} =
{{{y - 4/2(y - 3)}}}