Question 21069
{{{x-25/x = 0}}}


Multiply both sides by the LCD which is x:
{{{x*x - x*(25/x) = x*0}}}
{{{x^2 - 25= 0}}}
{{{x^2 = 25}}}


Take the square root of both sides.  Don't forget you must put the plus or minus when you do:
{{{x = 0+-sqrt(25)}}}  (NOTE:  Ignore the 0. Sorry about that!)
{{{x = 0 +- 5}}}


R^2 at SCC