Answer:
x = 3
CD = 21
CE = 21
DE = 16
Step-by-step explanation:
Isosceles triangle is a triangle in which two sides have the same length.
Triangle CDE with ∠D = ∠E so DE is the base
then CD = CE
4x + 9 = 16x - 27
16x - 4x = 9 + 27
12x = 36
x = 3
CD = 4x + 9 = 4(3) + 9 = 21
CE = 16x - 27 = 16(3) - 27 = 21
DE = 7x - 5 = 7(3) - 5 = 16
