Respuesta :

The answer is a you solve this by dividing 54 by 12 the multiply that answer by 2 and then you have x

Answer:

9

Step-by-step explanation:

In the larger triangle you divided 12 by 2 which gave you the length of its corresponding side. So if you do 12/6 to get 2, you divide 54 by 6 and get 9.