The figure on the left:
Because the lines are parallel,
(5y - 4) + (3y) = 180o ---> 8y - 4 = 180o ---> 8y = 184o ---> y = 23o
3y = 2x + 13 ---> 3(23) = 2x + 13 ---> 69 = 2x + 13 ---> 56 = 2x ---> 28o = x
The figure on the right:
Because the lines are parallel,
3x + 2y + 4y = 180o ---> 3x + 6y = 180o
Because they are in a triangle,
2y + 4y + 5x - 20o = 180o ---> 6y + 5x = 200o
Solving these equations: 6y + 3x = 180o
6y + 5x = 200o
Subtracting: -2x = -20o
And, now it's your turn ...