Question 201269
{{{3(-x+4)<-15}}}
{{{-3x+12 < -15}}}
{{{-3x < -27 }}}  divide both sides by -3. remember to flip the sign
{{{x > 9}}}

See this URL for this kind of stuff --> http://www77.wolframalpha.com/input/?i=3(-x%2B4)%3C-15