Question 1007726
Let me write this the way I think you meant it...
{{{(5+(1/y)) / (25-(1/y^2))}}}
You can factor the denominator into
(5 + 1/y)(5 - 1/y)
so that the numerator cancels, leaving
{{{ 1 / (5 - 1/y)}}}
Multiply top and bottom by y and get
{{{ y /(5y-1) }}}