Answer:
x = 149 degree
Explanation:
First, we have to find the missing angle of the triangle
1 triangle = 180 degree
We know 2 angles, one is 63 degrees and one is 86 degrees.
63 + 86 = 149 degree
180 - 149 = 31 degree
So, the angle of the triangle is 31 degrees. Now we know that angle add with the x to get 180 degrees, so
180 - 31 = 149 degree
So, x = 149 degree