Answer:
x = 70
y = 110
z = 30
Step-by-step explanation:
all triangles add up to 180
30 + 80 = 110
180 - 110 = 70
30 + 40 = 70
70 + 80 = 150
180 - 150 = 30
40 + 30 = 70
180 - 70 = 110
