Respuesta :

Smotteh
up 5 down 7 up 12
so the answer is 23

Answer:

23 is the answer.

Step-by-step explanation:

5+5 =10

10-7 =3

3+12=15

15+5 =20

20-7=13

13+12=25

25+5=30

30-7= 23  is the answer,

Rule is

Step 1 : Add 5

Step2 : Subtract 7

Step3: Add 12

And repeat it to get the series .