So..... 14 + 3= 17. I think. I mean, this is what I got from what I understand.
Answer:
2.2
Step-by-step explanation:
47/21 = 2.238095
round to tenth = 2.2
We have the equation:

so:

and:

This equation has one solution.
A. 6-4=2 YES
12 + 12 = 14 NO
B. 5-3=2 YES
10+9 = 14 NO
C. 3-1 = 2 YES
6+3 = 14 NO
D. 4-2= 2 YES
8+6 = 14 YES
THE ANSWER IS D