Question 401391
{{{2/x - 2/(x-3)<= 0}}}  <==> {{{1/x - 1/(x-3)<= 0}}}
<==> {{{(x - 3 - x)/(x(x-3)) <= 0}}} ==> {{{1/(x(x-3)) >= 0}}}
The critical numbers of the inequality are 0 and 3.
At the interval ({{{-infinity}}}, 0), {{{1/(x(x-3)) >= 0}}}.
At the interval (0,3), {{{1/(x(x-3)) < 0}}}.
At the interval (3, {{{infinity}}}), {{{1/(x(x-3)) >= 0}}}.
The critical numbers 0 and 3 don't satisfy the inequality.
Therefore the solution set is ({{{-infinity}}}, 0)U(3, {{{infinity}}}).