Please help! I really need help on this. Also if I could get an explanation on this it would really help.

Answer:
x= 10
Step-by-step explanation:
Since the triangles are congruent
<B = <E
50 = 5x
Divide each side by 5
50/5 = 5x/5
10 =x
Answer:
10
Step-by-step explanation:
Since B corresponds to E, the two angles are equal
50 = 5x
x = 10°