Answer:
y= 97 and z= 30.33
Explanation:
The steps are attached I will just give the reasons.
Angles that are opposite and lie on the same line are equal, so 83°.
Angles that 'face' each other are always equal to 180°.
Angles that are on different lines facing opposite of each other are equal. Think of it like a Z shape where the angle in Z that is just changing the direction is equal.
In a straight line, two divided angles will equal 180 degrees.
So y= 97 and z= 30.33