Respuesta :

Answer:

D) 9

Step-by-step explanation:

Opposite sides in a parallelogram are equal.

2x - 3 = x + 3

Add 3 and -x on both sides.

2x - x = 3 + 3

Combine like terms.

1x = 6

The value of x is 6.

Plug in x as 6 for CD.

x + 3

(6) + 3

= 9

Answer is D! 9 is the best choice