1, both sides of the inequality are multiplied or divided by a negative number;
2. The reciprocal of the inequality with the same sign (that is, positive or negative) needs to be changed.
Because -5m-3=-(5m+3)
therefore
-5m-3 & gt; 0
-(5m+3) > divide both sides of 0 by-1
5m+3 & lt; 0
m & lt-3/5