Answer:
x=81
Step-by-step explanation:
This is a triangle,to solve you have to be calm and reason well
We are given two angles in the question and normally a triangle should have three angles
It was discovered that one of this angle is not placed inside the triangle so we will have to look for a way to bring it in...to do that, let's represent the inner part to be t
139+t=180(angle on a straight line)
t=180-139
t=41
Therefore the angle inside the triangle is 41
Sum of the triangle is 180
58+x+41=180
Collect like terms
58+41+x=180
99+x=180
Substrate 99 from both sides
x=81
Therefore x is 81
