Answer:
x=6
z=74
Step-by-step explanation:
z and 74 are vertical angles and vertical angles are equal
z = 74
74 and 12x+34 are supplementary angles since they form a line. Supplementary angles add to 180.
74+ 12x+34 = 180
Combine like terms
12x+108 = 180
Subtract 108 from each side
12x = 180-108
12x = 72
Divide by 12
12x/12 = 72/12
x =6
