2 dozen eggs means 2 x 12 = <<2*12=24>>24 eggs
3 x 2 = <<3*2=6>>6 eggs cracked.
The remaining eggs still in perfect condition is 24 - 3 - 6 = <<24-3-6=15>>15
The difference between the perfect eggs and cracked eggs is 15 - 6 = <<15-6=9>>9 eggs.
#### 9