Given composite inequality : 12h - 3 > 15h or 5 > -0.2h +10.
Let us solve them one by one.
12h - 3 > 15h
Subtracting 12h from both sides, we get
12h-12h - 3 > 15h -12h
-3 > 3h
Dividing both sides by 3, we get
-3/3 > 3h/3
-1 > h .
Solving 5 > -0.2h +10.
Adding -0.2h on both sides, we get
5 +0.2h > -0.2h+0.2h +10.
5 +0.2h > 10.
Subtracting 5 from both sides, we get
5-5 +0.2h > 10-5.
0.2h > 5
Dividing both sides by 0.2, we get
0.2h/0.2 > 5/0.2
h > 25.
Therefore -1>h or h>25.
