tolong besok di kumpul dikecili juga bilangannya

1. 11/15 + 4/6 = 42/30 = 7/5
2. 19/12 + 2/3 = 27/12 = 9/4
3. 13/8 + 2/3 = 55/24 

1. 1/3 + 2/5 + 4/6 = 10/30 + 12/30 + 20/30 = 42/30 = 21/15 = 1 6/15 = 1 2/5
2. 5/6 + 3/4 + 2/3 = 10/12 + 9/12 + 8/12 = 27/12 = 9/4 = 2 1/4
3. 7/8 + 3/4 + 2/3 = 21/24 + 18/24 + 16/24 = 55/24 = 2 7/24