Answer:
angle x = 133 degrees
Explanation:
A straight line has a angle of 180.
So you need to find the other angle of the triangle.
To do this add the known angles and subtract from 180 because that is the sum of all angles of a triangle.
91 + 42 = 133
180 - 133 = 47
Now subtract 47 from 180.
180 - 47 = 133
The answer is 133.