12h - 3 > 15h or 5 > - 0.2h + 10

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.