I believe it is D but it may be B
Answer: A, D
Step-by-step explanation:
A) Correct. . Similar logic for y.
B) Incorrect. The numerators are different.
C. Incorrect. The denominators are not the same.
D. Correct. The denominators are the same by difference of squares.
10:21
There are 10 males and males plus females equal 21
28+(140-56)/6-(80-39)
=28+84/6-41
=28+14-41
=42-41
=1