Question 912545

Use the common denominator {{{(x+1)(x-1)}}}
{{{(5(x-1))/((x-1)(x+1))-(7(x+1))/((x-1)(x+1))=0}}}
{{{(5(x-1)-7(x+1))/((x-1)(x+1))=0}}}
{{{5x-5-7x-7=0}}}
{{{-2x-12=0}}}
{{{-2x=12}}}
{{{x=-6}}}