Answer:
x =3.
Step-by-step explanation:
This is an isosceles triangle so the 2 sides opposite the equal angles are congruent.
So 3x + 2 = 11
3x = 9
x = 3.
49 and 2/3
3x+2+18+11=180
3x+31=180
3x=149
x=49 and 2/3
