You can put this solution on YOUR website! -3f-7>-f+9 start this one by trying to get your f to one side.
for add f to each side for to get rid of it from the right side.
-2f-7>+9 add 7 to both sides to get rid of it from the left side.
-2f>16 divide -2 from each side to get f by it self
f<-8 for the > change to > for you are dividing a negitive a cross it.
same if you was multiplying a negative.
finnal answer is f<-8