<h3>
Answer: x = 60</h3>
Work Shown:
a+x = 180
120+x = 180
x = 180-120
x = 60
Side note: angles 'a' and x are same side interior angles, which are supplementary whenever we have parallel lines like this.
I believe the answer is 7
It is also a quadrilateral
You either need to add the two times together or you need to subtract them