Question 65588
Add : 

(3/x+3) - (2x + 1 / x^2 - 9)
{{{3/(x+3)-(2x+1)/((x+3)(x-3))}}}
{{{3(x-3)/((x+3)(x-3))-(2x+1)/((x+3)(x-3))}}}
{{{(3x-9)/((x+3)(x-3))-(2x+1)/((x+3)(x-3))}}}
{{{((3x-9)-(2x+1))/((x+3)(x-3))}}}
{{{(3x-2x-9-1)/((x+3)(x-3))}}}
{{{highlight((x-10)/((x+3)(x-3)))}}} <--this is fine for a lot of teachers.
{{{highlight((x-10)/(x^2-9))}}} <--others want you to multiply the denominator.
Happy Calculating!!!