Answer: 
Step-by-step explanation:
For this exercise it is important to remember:
- The Distributive property:

- The multiplication of signs:

Then, given the following expression:

You need to apply the Distributive property. Then:

Now you can combine like terms (or add the like terms). Then you get:

Therefore, the equivalent expression created by combining like terms, is:

Answer:
4
Step-by-step explanation:
Answer:
H = -6
Step-by-step explanation: