Answer :
6r-48+3>7r+21-23
6r-45>7r-2
6r-7r>-2+45
-r>43
r<-43
notice that the inequality changes its meaning once you multiply/divide by a negative number
6r-48+3>7r+21-23
6r-45>7r-2
6r-7r>-2+45
-r>43
r<-43
notice that the inequality changes its meaning once you multiply/divide by a negative number