The difference of the given fraction is expressed as 
Given the expression:
Take the LCM of the fraction to have:

Hence the difference of the given fraction is expressed as 
Learn more on fractions here; brainly.com/question/78672
I think it would be FGD and HGD
X^2=3^2+7^2-*3*7cos52
x=6.083
7^2=3^2+6.08^2-2*3*6.08cosy
solving for y
y=94.71
Answer is B, 21.6
Let me know if you need an explanation
Answer:
The answer is in here.
Step-by-step explanation:
https://www.ekslkvkalkdn9uk2g2kglkkkje9jdkflw/. You might have to change some settings to get in.