Answer:
7/15x - 9
Step-by-step explanation:
(4/5x - 5) - (1/3x + 4)
remove the parentheses
4/5x - 5 - 1/3x - 4
simplify each variable
4/5x - 9 - 1/3x
7/15x - 9
Answer:

Step-by-step explanation:

I and III seem to be correct, II doesn't because, for example, if x = w = z = t = 70 and y = u = 40, then all three pairs of vertical angles in the figure have equal measure and the given condition x + y = u + w stands. But it means y is not equal to w.
I think its c hope this helps sorry if it dont