Idon’t understand i’m guessing you use 5 i don’t know

You’re just replacing h with the given, which is 5.

1.) - 7 - 4h + 3h - 8

2.) - 7 - 4(5) + 3(5) - 8
Replace h with 5

3.) - 7 - 20 + 15 - 8
Multiply 4 and t to get 20. And multiple 3 and 5 to get 15.

4.) - 27 + 7
If it’s a negative and a negative, you add them together, but you include the negative sign with it. So, - 7 + (- 20) is - 27. Then, you subtract 8 from 15 to get positive 7.

5.) - 20
Since the negative number is larger than the positive number, it’ll still be a negative number. So, - 20 + 7 will be - 20.