tolong di jawab besok di kumpulkan

1. 2/3 + 1 1/3 = 2/3 + 4/3 = 6/3 = 2

2. 2/5 + 3 1/10 + 2 3/5 = 2/5 + 31/10 + 13/5 = 4/10 + 31/10 + 26/10 = 61/10 = 6 1/10