Question 58483
You're real close, I think you're just missing a parenthesis:
{{{(1/y+1/3)}}}/{{{(1/y-1/3)}}}
{{{(3/3y+y/3y)}}}/{{{(3/3y-y/3y)}}}
{{{((3+y)/3y)}}}/{{{(3-y)/3y}}}
{{{((3+y)/3y)*(3y/(3-y))}}}
{{{((3+y)/cross(3y))*(cross(3y)/(3-y))}}}
{{{(3+y)/(3-y)}}}  <--- this is fine here, if you want to lead with y's:
{{{(y+3)/(-y+3)}}}  <---if you have something against leading - numbers:
{{{(y+3)/(-(y-3))}}}
{{{-(y+3)/(y-3)}}}
Happy Calculating!!!