Answer:
y = 111 , z = 32
Explanation:
3z - 27 and 69 are alternate exterior angles and are congruent (equal), so
3z - 27 = 69 ( add 27 to both sides )
3z = 96 ( divide both sides by 3 )
z = 32
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3z - 27 and y are a linear pair and sum to 180 , that is
3z - 27 + y = 180 ( from above , 3z - 27 = 69 )
69 + y = 180 ( subtract 69 from both sides )
y = 111