What is AE?
Answer in units.

Answer:
Step-by-step explanation:
∆EAB~∆EDC(AAA SIMILARITY CRITERION)
AE/DE=AB=DC
2x+10/x+3=10/4
x+5/x+3=5/4
4x+20=5x+15
5=x
AE=2x+10
AE=20units