Question 49244
{{{(x^2-25)/(3x-9) * (x-3)/(x^2-10x+25)   }}} Factor everything 
{{{(x+5)*(x-5)/(3*(x-3))* ((x-3)/((x-5)*(x-5)))  }}}Cancelling common factors
{{{((x+5)/(3*(x-5)))}}} is the final answer