线段AB=5cm,延长AB至点C,使AC=2AB,反向延长线AB至点E,使AE=3/5CE,画出线段即可,

问题描述:

线段AB=5cm,延长AB至点C,使AC=2AB,反向延长线AB至点E,使AE=3/5CE,画出线段即可,

E--------------------------A--------B---------C
AC=2AB=10
AE=3/5CE=3/5(AE+AC)=3/5(AE+10)
AE-3/5AE=3/5×10
2/5AE=6
AE=15