Respuesta :
Answer:
4
Step-by-step explanation:
Subtract any number from the next number.
7 - 3 = 4
[tex]\huge{\boxed{4}}[/tex]
The common difference is the number that is added each time to get the next one.
In this case, [tex]\boxed{4}[/tex] is added to each number. Take 3 and add 4 to get 7.