Answer:

Step-by-step explanation:
Solve for h, means that you have <em>to clear</em> h.
We have the expression 
We can divide both sides of the equation in (a+b):

Now divide again both sides of the equation in 12.

Observation: Distributive property:
, then: 
The answer is: 
Answer:
c
Step-by-step explanation:
Answer:
-1/8
Step-by-step explanation: