The answer is A, it can't land on a number that doesn't exist.
What exactly is your question?
The final answer would be 39/19 it doesn't simplify any more and if it did the 19 would be reduced as well as the 39
Answer:
n=7 3/4, -7 3/4
n=4.30351707...,-4.30351707...
2x + 100 = 5x + 55
3x = 45
x = 15
2(15) + 100 = 130
180-130 = 50
so angle 2 is 50 degrees