Respuesta :

First you need to find a common denominator. 11/15 = 22/30

3/10= 9/30

9/30+22/30= 1 1/30

Hope this helps!
11/15 + 3/10

11/15 = 22/30

3/10 = 9/30

22/30 + 9/30 = 1 1/30