Answer:
x = 86, y = 67, z = 94
Explanation:
Since all the angles in a triangle add up to 180 degrees, we can solve for x by:
180 - 56 - 38 = 86
Since supplementary angles add to 180:
180 = x + z
z = 180 - x = 180 - 86 = 94
Then since all angles in triangle add to 180 degrees:
180 - 94 - 19 = 67