Answer:

Step-by-step explanation:
Here, the given expressions are:
A) 
Solving this, we get

⇒
B) 
Now, solving this, we get

⇒
C) 
Simplifying this, we get

⇒ 
Help with what part I can help
It would be nice If I could read it better. The answer is C if is says angle 3 and angle 5.
(-16+12)/(-4+2)= (-4)/(-2)= 2
im not t he best at math but i think its a base on the question