Answer:
A ---------- 69 x 12
Step-by-step explanation:
i did the FLVS test and got it right
36.3
75
15
5x+13+11x-73=180°( co-interior angles sum is 180)
5x+11x+13-73=180°
16x-60=180
16x=180+60
16x=240
x=15
