Respuesta :

pridehappy675

Step-by-step explanation:

12=10 I think you have to add 10+2and then you get 12.

18=×you will have to multiply 18 by a number probably by 10 or 12
x=15
this is because 12:10 which is also 6:5.
then you multiply 6 by 3 and get 18. so then you multiply 5 by 3 and get 15
i hope this helped