<PRE><B>Question 341606</B>
{{{(x+4)/(x)-(2x-5)/(x+1)}}}
LCD = x(x+1)
{{{((x-4)(x+1) - (2x-5)*x)/x(x+1)}}}
{{{(x^2-3x-4-2x^2+5x)/x(x+1)}}}
{{{(x^2+2x+1)/x(x+1)}}}
{{{(x+1)^2/x(x+1)}}} 
{{{(x+1)/x}}}

2. (2-x)/(2x+6)+ x/(x^2-9)

{{{(2-x)/(2(x+3))+ x/(x+3)(x-3)}}}
2(x-3) = LCD
{{{(2-x)(x-3)+2x(x-3)/2(x-3)}}}
{{{(2x-6-x^2+3x+2x^2-6x)/2(x-3)}}}
{{{x^2-x-6)/2(x-3)}}}
{{{(x-3)(x+2)/(x-3)}}}
{{{(x+2)}}}</PRE>