Question 966945
{{{x/(x-7) - 9/(x^2-49)=x/(x-7) - 9/((x-7)(x+7))}}}
{{{x/(x-7) - 9/(x^2-49)=(x(x+7))/((x-7)(x+7)) - 9/((x-7)(x+7))}}}
{{{x/(x-7) - 9/(x^2-49)=(x(x+7) - 9)/((x-7)(x+7))}}}
{{{x/(x-7) - 9/(x^2-49)=highlight((x^2+7x-9)/((x-7)(x+7)))}}}