Answer:
A. 
Step-by-step explanation:
I'm not sure if this is right
Answer:
39°
Step-by-step explanation:
51° +? = 90°
? = 90° - 51°
? = 39°
Hope it helps you in your learning process.
Answer:
for 24 and 72 its 24 for 16 and 18 it is 2
Step-by-step explanation:
Answer:
1
Step-by-step explanation:
Given :
divided by 
Now, it can be solving as:

Simplest form of given equation is 1