Question 144609
{{{ 7x / (x+1) -  3/x  = 7 }}}
{{{ 7x*x / ((x)(x+1)) -  3(x+1)/((x)(x+1))  = 7 }}}
{{{ 7x^2/((x)(x+1)) -  (3x+3)/((x)(x+1))  = 7 }}}
{{{ (7x^2-3x-3)/((x)(x+1))= 7 }}}
{{{ (7x^2-3x-3)= 7x(x+1) }}}
{{{ (7x^2-3x-3)= 7x^2+7x }}}
{{{ -10x-3=0}}}
{{{ x=-3/10}}}