N = the number
0.5n - 9 = 4n + 5
(0.5n - 0.5n) - 9 = (4n - 0.5n) + 5
-9 = 3.5n + 5
(-9 - 5) = 3.5n + (5 - 5)
-14 = 3.5n
-14/3.5 = 3.5n/3.5
-4 = n
The number is -4.
I don't think there is a ratio for that I have only herd of stuff like "What is the ratio of 5 to 3.
Angle 1 is 107
Angle 2 is 73
Change X and Z. X is first evening
Y is second
Z is third evening