Answer:
x= 2
z = 106
Step-by-step explanation:
By the definition of vertically opposite angles,
(10x + 54)° = 74° [Pair of opposite angles made by two intersecting lines]
10x = 74 - 54
10x = 20
x = 2
z° + 74° = 180° [Pair of supplementary angles]
z = 180 - 74
z = 106