Question 308027
{{{((3/(3+x))+(1/(x-3)))/((1/(3+x))-(1/(3-x)))}}} multiply by a common one on top and bottom
{{{((((x-3)/(x-3))(3/(3+x)))+(((3+x)/(3+x))(1/(x-3))))/((((3-x)/(3-x))(1/(3+x)))-(((3+x)/(3+x))(1/(3-x))))}}} multiply accross in all the parts
{{{(((3x-9)/((x-3)(3+x)))+((3+x)/((3+x)(x-3))))/(((3-x)/((3-x)(3+x)))-((3+x)/((3+x)(3-x))))}}} add the numerators on top and bottom
{{{(((4x-6)/((x-3)(3+x))))/(((-2x)/((3-x)(3+x))))}}} 
with a fraction divided by a fraction u multiply first fraction by reciprical of second fraction
{{{((4x-6)/((x-3)(3+x)))(((3-x)(3+x))/(-2x)))}}} 
{{{((4x-6)/((x-3)cross(3+x)))(((3-x)cross(3+x))/(-2x)))}}} 
{{{((4x-6)/(x-3))((3-x)/(-2x)))}}} multiply across
{{{(((4x-6)(3-x))/((x-3)(-2x)))}}}
{{{(-4x^2+18x-18)/(-2x^2+6x)))}}}
{{{(-2(2x^2-9x+9))/(-2(x^2-3x))}}}
{{{(2x^2-9x+9)/(x^2-3x)}}}