Answer:
x=12
4x+2=50°
Step-by-step explanation:
the sum of the angles of a triangle are 180°
the angles on a straight line add up to 180° hence 180-80=100°
therefore
30+100+4x+2=180
4x=180-132=48
x=48
then substitute and you'll get x=12 and the angle 50°
