Respuesta :

obsessivebookworm
B. -6 
The numbers in the equation are decreasing meaning that the common difference must be a negative number. 
mathstudent55

Answer:

-6

Step-by-step explanation:

To find the common difference, subtract a number from the next number.

39 - 45 = -6

You can use any two consecutive terms. The result will be the same.

For example, 21 - 27 = -6

Answer: -6

Otras preguntas