Question 526431
{{{(x/(a-x))+(x/(x+a))=(a(x+3))/(x^2-a^2)}}}
{{{(-x/(x-a))+(x/(x+a))=(a(x+3))/(x^2-a^2)}}}
{{{((-x(x+a)+x(x-a))/(x-a)(x+a))=(a(x+3))/(x^2-a^2)}}}
{{{((-x(x+a)+x(x-a))/(x^2-a^2))=(a(x+3))/(x^2-a^2)}}}
{{{((-x(x+a)+x(x-a))/(cross((x^2-a^2))))=(a(x+3))/(cross((x^2-a^2)))}}}
{{{-x(x+a)+x(x-a)=a(x+3)}}}
{{{-x^2-ax+x^2-ax=ax+3a}}}
{{{-x^2-ax+x^2-ax=ax+3a}}}
{{{(cross(-x^2))-ax+(cross(x^2))-ax=ax+3a}}}
{{{-ax-ax-ax=3a}}}
{{{-3ax=3a}}}
{{{-x=3a/3a}}}
{{{-x=(cross(3a))/(cross(3a))}}}
{{{-x=1}}}
{{{-x(-1)=1(-1)}}}
{{{x=-1}}}