For parallel lines, slopes are equal.
5x - 3y = -10
3y = 5x + 10
y = 5/3 x + 10/3
Required slope = 5/3
You would need to add 22 to 38 then divide that answer by 5 to get x
Hmm idk hard one jnmmdmkrkror

This happens whenever

or

. More generally,

whenever you start with one of these angles and add any multiple of

, so the general solution would be

, where

is any integer. (Notice that when

, you end up with

.)
The answer is 32 cm. for the hexagon