Respuesta :

Answer:

6

Step-by-step explanation:

46 72

/ \. /. \.

(7) 6. 8. 9

/ \. / \. /\

(3) (2). 4 (2)(3)(3)

/ \

(2)(2)

The common prime numbers in both is 3 and 2 so you do 3x2=6