First you solve what's in the brackets " (3h - 8) "
Since 3 is multiplied by h, it cannot be subtracted by 8, so it's stays how it is
Next you have:
7h -5 x 3h - 8
You solve what's being multiplied first, which are:
-5 x 3h = -15h (Only multiply the numbers and keep the h positive)
Now you have:
7h - 15h - 8 = -22h - 8
Your answer is:
-22h - 8