Question 17960
Well, you got started ok but your fourth step is in error.  You must collect the x-terms (5x & 3x) together on the same side of the = sign.

{{{5x + 24 <= 3x}}} At this point, you can subtract 24 from both sides.
{{{5x <= 3x - 24}}} Now, subtract 3x from both sides.
{{{2x <= -24}}} Finally, divide both sides by 2.
{{{x <= -12}}}