Question

answer this question

Answer 1

y=180-120
=60 degree
z+y=180 degree
z=120 degree
x+2y+z=360 degree
x=120 degree

Answer 2

y+120=180(linear pair)
so,y=60°
x+y=180(co interior)
x+60=180
x=120°
y+z=180(co interior)
60+z=180
z=120°