Question 624411
{{{10/x - x/(x+3)}}}


{{{(10(x+3))/(x(x+3)) - x/(x+3)}}}


{{{(10x+30)/(x(x+3)) - x/(x+3)}}}


{{{(10x+30)/(x(x+3)) - (x*x)/(x(x+3))}}}


{{{(10x+30)/(x(x+3)) - (x^2)/(x(x+3))}}}


{{{(10x+30-x^2)/(x(x+3))}}}


{{{(-x^2+10x+30)/(x(x+3))}}}


{{{-(x^2-10x-30)/(x(x+3))}}}


{{{-(x^2-10x-30)/(x^2+3x)}}}


So the expression simplifies to {{{-(x^2-10x-30)/(x^2+3x)}}}