Question 874568
Subtract 6 from both sides. Afterwards, divide both sides by -9 to isolate c (this will flip the inequality sign).



{{{-9c+6>-21}}}



{{{-9c>-21-6}}}



{{{-9c>-27}}}



{{{c<-27/(-9)}}} Don't forget about the sign flip (which happens when you divide both sides by a negative number).



{{{c<3}}}