Respuesta :

Answer:

You can use 24 as a denominator

Step-by-step explanation:

8 and 12 both have the multiple of 24

8x3 is 24, so you have to multiply the numerator of 3, by 3

12x2 is 24, so you have to multiply the numerator of 1, by 2

so you will have 9/24 + 2/24 which equals 11/24

I hope this helps

24 can be your deonominator.