Respuesta :

Answer:

20

Step-by-step explanation:

4&6 are both ⅔ their similar side, 4 is ⅔ of 6 and 6 is ⅔ of 9. that means x will also be ⅔ of 15.

⅔ of 15 is 10. So you need to add 4,6, and 10.

4+6+10=20