Respuesta :

Answer:

Anna's friend has 4 pets.

Step-by-step explanation:

Anna has 3 pets.

3-1=2

2x2=4

Her friend has 4 pets. Because 3-1 equals 2 and 2 doubled is 4. also if you reverse it starting with four it works here is the problem you would have started with (x-1) times 2=3 if you replace x with 4 it works