Respuesta :

A related subtraction fact would be 12-9=3. Hope this helps.
A related subtraction fact would be: 12-9=3. Another related subtraction fact would be 12-3=9. The reason for this is because it is all apart of the same fact family. The fact family is this. 

Fact Family:
9+3=12
3+9=12
12-9=3
12-3+9