9514 1404 393
Answer:
x = 5
Step-by-step explanation:
In order to obtain a solution, we must assume that the figure is a parallelogram.
Angle BED will be congruent to angle BCD. The sum of angles in triangle BED is 180°, so we have ...
55° +51° +(14x +4)° = 180°
14x = 70 . . . . . . divide by °, subtract 110
x = 5 . . . . . . . . . divide by 14
