You can put this solution on YOUR website! 20 - 4/5x >16
-4x/5>16-20
-4x/5>-4 cross multiply
-4x>-4*5
-4x>-20 divide by -4
x<-20/-4 Note: the > sign changes to a < sign when dividing by a negative value.
x<5 ans.
Proof:
Let x=4.9
20-4/5*4.9>16
20-19.6/5>16
-19.6/5>16-20
-19.6/5>-4
-3.92>-4